I think that is what was already being suggested more than once, starting quite a while back by Trausti, picked up on by Rvonse for example, and many of my recent comments can be seen as already responding to it.
No, because that does not seem to be the overall picture. See previous posts and all the points therein, as a whole. It's just one scenario among many, according to evidence which is, unlike yours, more than anecdotal. Though there may be some truth in it, up to a point. I accept that.
It's not even what I would say, at all, about bars and nightclubs either, if I were to be similarly anecdotal about my experiences, and I have been in a lot of bars and a lot of nightclubs. And of course bars and nightclubs are only two places where people meet potential partners, albeit common ones in recent decades. But still, a lot of people meet partners, and certainly used to meet partners, even a few decades ago, in other, different social contexts. Plus, in bars and nightclubs, people tend to be intoxicated, which might (would) affect behaviours, and the background noise levels might favour certain types of behaviour, social skills and interactions, over others. And we are, I think, often (but not always) talking about initial meetings, often with strangers.
Has anybody seen the UK Channel 4 tv series 'First Dates' where the initial meeting is intimate, across a restaurant dinner table and there is no loud music or other distracting noise in the background and where conversational and other social skills, and demeanours, come to the fore? I have watched it quite frequently over a number of years. I myself have not noticed a pattern of women falling for macho/toxic or aggressive men in that. Often, the prospective couples have been 'matched' as regards several things, including physical appearance among others (and indeed sexual orientation). One good thing about that show is that we get to see what people actually (with reality tv caveats) do, rather than what they say they do or what they report generally as their preferences.
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If ordinary men weren't socialised to be like women bad boys wouldn't be as attractive to women. That's my hypothesis.
And I think it's somewhat awry. It does not seem to fit the available facts though. See previous posts and all the points therein, as a whole.
For example, one online 'reporting' study, involving 1200 German women, apparently (I only read an article in Psychology Today, I could not find the study itself) showed results that those women were more likely to prefer 'macho/aggressive' men either during ovulation or when considering short-term dates, and to prefer less 'macho/aggressive' men when considering either a long term relationship or marriage.
The Allure of Aggressive Men
https://www.psychologytoday.com/gb/blog/head-games/201305/the-allure-aggressive-men
And I would not agree with that article in all respects. It says women have to choose between 'dads' and 'cads'. I doubt many women actually have to make that binary choice. Most potential candidates are going to be a blend, mostly somewhere near the middle of a relevant bell curve distribution.
And that result is just an example of one of a number of variations and complexities. And, as ever, it only means some women, of a certain demographic and age group. If a majority, then a slight majority. For one characteristic in isolation. And has to be seen in the context of other real-world factors affecting choice of partner and there are many, because in the real world, men (and women) come in different packages with different pros and cons. An experiment splits choices, often into one thing versus another, and so is artificial compared to variegated reality. And it's only one study, for one scenario. Other studies show different, sometimes contrary results. Get out there and start reading around. Things might not be as you think, or accord with your own personal, anecdotal evidence and hypotheses.
Finally, almost all sorts of (straight) men and all sorts of (straight) women get together, get it on, live together, get married and have children. We don't live in overtly polygamous groups like some other animals do, where one male can readily corner most females (or vice versa) at the expense of other males (or vice versa, there is an interesting type of sea squid, or perhaps it's an anemone, where the female keeps lots of males in little pouches on the sides of her body and only lets them out to have sex). Jolly noted that murder (for example) is far less common than it used to be. Humans may not be being sexually selected for the traits they once were. And certain types of selection can operate over very short timescales.
All in all, we can't make much of a justification, especially not a moral one, out of such things anyway. At best, they may help to explain. In that sense, I think people should be willing to incorporate such things, where they are true and to what extent, into their understandings, even if they don't like them. But this is separate from questions about what to do or what can be done about toxic masculinity, particularly when it comes to serious issues such as rape and sexual assault in particular, because we are not prisoners of evolution. The example of violence generally could be appropriate here. And remember, things like rape are not, it seems, about attraction, though they may be about other aspects of so-called 'toxic masculinity'. And/or they might be about other things. The term 'toxic masculinity' does not explain all 'deviances', I don't think. I see it more as a useful tool/concept to explore and possibly address some things, that's all, and definitely not necessarily as part of a particular, for instance Feminist, paradigm. And of course, 'masculinity' and 'femininity' are moveable feasts themselves, as terms, since they have to do with norms and roles, which are not static and not separate things anyway.
Also, saying that 'ordinary men are socialised to be like women' seems dubious, as a general explanation. I'm almost afraid, and certainly reluctant, to ask what you mean by that, and what it's based on.