It's a pretty serious accusation and massive sweeping negative generalisation.
And there it is!
Although, I think you have produced that sentence a little prematurely.
There is no serious accusation, because the words 'rape culture' is not an accusation.
Talking about men who support rape culture is not a 'sweeping generalisation'.
But for the avoidance of doubt, men saying they are lesbians and their penis is a female organ, in order to coerce lesbians into including them either in their dating pool, or as a sex partner, is sexual harassment.
That is a crime.
For the avoidance of doubt, and so you can't twist my words if a man says out loud I'm a lesbian, that is obviously not a crime. If he does it to coerce a lesbian into sex, that is sexual harrassment.
I think we both know the definition of the word rape.
Your problem is you don't understand that ignoring boundaries and consent supports rape culture.
Except you understand only too well about all of this. You just disagree. Which makes you part of the problem.