Actually, mainstream feminism does care about all those things you’ve mentioned. They just aren’t focusing the bulk of their time and efforts to focus on them, in part because it would dilute their time and effort, and in part because whenever feminists (like Joe and others) talk about how patriarchal masculinity harms men too, they get shouted down by a guy like you.

True Feminism Is About Equality for Both Genders

And when you say objectively false things that are dismissive of real people’s pain (like that there is no rape culture), you kinda deserve to be shouted down. Mainstream feminism doesn’t say men have no problems or pain — they are just focused primarily on women.