Occasional shift in sex roles in relationships

Occasional shift in sex roles in relationships. Does such a thing even exist, and can it ever be healthy, and is it occurring in natural environments at any degree?

In modern times it seems that some kind of occasional shift in sex roles happens especially concerning sexual perversions. Pegging is a porn genre and a sex habit that has become more and more popular. Just the other day a young male I know said how he is soon going to try that... so he's soon going to let his girlfriend penetrate his ass with a strap-on. An occasional shift in sex roles.

But I suppose this kind of behavior would decrease the respect that women feel for males, in most cases.

Wouldn't this be a similar case, where a woman is demanding a male to open up to her, be vulnerable, be weak...? But once a male does that, a female loses all respect for him. Would this be the case in sex as well? If a woman ties a man in a bed, leaving a man vulnerable and unable to decide what is going to happen to him, or if a woman penetrates a man, wouldn't this lead to the woman losing all respect for a male as well?

Though I'm not sure if the submission of a man to a woman in sexual practice is what women demand... I think I've observed more males that want to be dominated occasionally than females who want to dominate. On dating apps there are countless males who are looking for a "dominant woman". I would even go as far as to say most males turn on sexually when a woman is doing an initiative on sex.

So why is it that males today like aggressive women to a high degree? Why is it that males turn on when a woman does an initiative? Obviously this is due to feminization of males, but could someone provide a deeper analysis?

I think some social philosophers have said that there is indeed a phenomenon of feminization of males, but there is no phenomenon of masculinization of females. So a female could perhaps mimic the masculine behaviors, by penetrating a male with a strap-on, for example. But she lacks the masculine essence nevertheless.

So not only would I like to hear analysis of the feminization of males, but also to what degree and for how long will women endure playing the male role, until some mental problems arise in them? Why do women agree playing the male role when males demand it, even to the smallest degree?

Also, isn't this kind of vicious circle for many males and females? Emasculated males needing what women need: order and someone taking control, directing them. But women can't do that. They by definition lack the masculine essence, right? So in reality only the males who are not affected by emasculation, who are not experienced a drop of testosterone, could provide what is lacking in females... and today, many males...

So actually the question is, if a male wants to be dominated, penetrated even... how far is that state from homo-sexuality?

*Any sexual practice that does not multiply the possibility of fertilization is a fetish.
all fetishes have a psychological source; expressing a repressed part of the individual.

*Agressive women?
Feminization of Man leaves a void often attempted to be filled by females.
Men-children are a form of feminization - stunted development - leading to an attraction to motherly figures, i.e., in control, dominant, protective etc. - parental role.

*Penis Envy is a feminine syndrome nobody ever mentions - all sexual syndromes are directed to males.
A way of controlling and repressing masculine sexual options.

*Respect is a form of anxiety/fear - fear of losing something the other provides or can withhold.
Afraid the other may hurt you, or withhold his/her affections, his/her mentoring etc.
A woman want a man to expose his weakness so as to gain control, and feel safer - exposing your hot buttons only she can push.
She is clueless, so if the male exposes weakness greater to what she acknowledges in herself, she loses sexual attraction for him....not necessarily respect, since she may like him as a friend and respect him because she does not want to lose his presence, his comforting, his alliance...etc.

*Taking on the masculine role may be a fetish for her, and a perfect match if she finds a male with a fetish to be penetrated.
Two psychological issues finding in each other the perfect match.
Going back to Weininger: high testosterone female is a perfect match for a low testosterone male.
A deaf female may be perfect for a blind male, or vice versa. Two compensating handicaps.
A male who wants to be penetrated is concealing homosexual tendencies.

*The inferior cannot mimic the superior, or what it finds incomprehensible.
A man can imitate a chimpanzee; a chimpanzee cannot imitate a human without seeming absurdly funny to a human.
And so females imitating males always comes across as hyperbole, since they cannot understand masculinity outside social pop-cultural caricatures; they always overplay the role; same for males who do not understand femininity tend to exaggerate and caricature it. In comedy this is done intentionally.
Similar to bad actors who do not understand the role....always overact.
Therefore, woman often make the worse bosses...or leaders in general.
Always, exceptions prove a rule.

*Feminization of Man implies a convergence of masculine/feminine, into a uniformity.
All traits that distinguish male form female are reduced to a median - settling on mediocrity.
Like lowering genius and uplifting idiocy to find a median IQ.
What is lost is the exceptional...good and bad.
Body building can be perceived as overcompensation du to the emasculating forces of modernity.

*Any use of an appendage, orifice, or artifice in a sexual manner - contrary to the evolutionary function of an appendage - is a fetish particular to the human species - another aspect of mind/body - gene/meme dissonance, and how sheltering protects allowing mutations to compounds over time, manifesting all sorts of psychosomatic strangeness.
Nature is frugal, and so what does not offer an advantage or what offers a disadvantage, is usually culled out of a gene-pool - so any excessive actions that provide no multiplying effects on survival and reproduction, thrive only within manmade environments when they provide and protect excess safety and nutrients.
Desire = libidinal excess energies.
Art, for example, is a product of these excess energies, redirected from procreativity to creativity - both expunging these excess energies accumulated easier within sheltering manmade environments.
Leisure, for instance, is essential.
But these are side-effects because not all can sublimate and/or redirect their libidinal energies towards creative objectives.
The vast majority redirects them towards destructive, elf-destructive, objectives...
Fetishes are a form of redirected excess energies, seeking relief. Like all energies under pressure the weakest point is the point of their release - so fetishes expose a psychosomatic weakness.

Thanks Satyr for the brief psychological summary of the perversions I asked about.