Lack of male role models, lack of male only organizations and clubs, in combination with the bromance studies and studies around the dynamics of gender role enforcement explain this. Men enforce gender roles when women are around, and less frequently when not. Men find it easier to talk about their emotions with men than with women. Women enforce gender roles on women regardless of male presence, and enforce them on men.
The solution is not more misandrous feminism, but less of it. Blaming men and concluding the solution to this is more feminism and more empowerment of women and such will only make the problem worse, but it's the only answer these peoples limited and dysfunctional worldview can offer them, as it is an answer they have arrived at before any evidence of a problem even emerges. (I.E, they pre-judge all situations, and there exists no evidence that will convince them they are wrong.)
Instead, what we need is either to be far more vigorous in confronting and deconstructing womens sexism, or more male only spaces and groups that will allow men to open up.
The reason men aren't talking is that there isn't anywhere they feel free to talk, because feminists destroyed all those places and refuse to properly accept the scope and depth of sexism in women and confront it, insisting that men are the bigger problem despite empirical evidence to the contrary. The glut of attacking male only spaces took place during a period of feminism where misandry was outright denied to be real, and even today that's a contentious notion for them with many still refusing to accept it. The consequence of that view was removing spaces necessary for mens wellbeing.
It's also worth looking at the escalation in rates of male suicide with this lens in mind, and putting both of these things at the door of the feminist movement and its perpetual string of failures, misandry, and inadequate solutions.
The example I posted earlier of the males only barber shop receiving death threats from feminists and eventually being bullied into opening to women too, and for instance, prestigious US universities banning male only groups but allowing sororities to continue. The crimes of feminism against men are not merely historical, but ongoing.
Feminism hasn't moved past this fuck up, it's still doing it, and feminists who "Don't support that" are absent from defending these groups, only turning up to defend their movements reputation when it is criticized.
You don't support these groups and mens spaces. You weren't there. Stop lying. You might not actively seek to destroy them like your peers, but you don't support them, and that is more than sufficient to conclude the feminist movement is inadequate, and cannot rightly claim to be an equality movement on behalf of both genders, that it needs to cede ground and accept the legitimacy of other movements.
give assistance to, especially financially.
The "Support" of feminists who "Aren't like that" is not assisting men and their issues, it is assisting feminism to continue operating and pretending to be adequate.