["Yes, but the result is that the feminist community, particularly online, is becoming insular and hostile without any apparent increase in the progress they're making"]

Meh. Men have been claiming feminist communities are insular and hostile since the days of fighting for the right to vote. It's nothing new and also nothing that's been empirically proven beyond the biased observations of a few.

["How do we know nobody in a position of power is biased against men/white people?"]

How do I explain how few fucks I give?

["The movements for equality aren't going to make much progress if their terminology and principles are being hijacked to promote hatred and bigotry."]

Name one movement for equality who *hasn't* had their terminology and principles hijacked to promote hatred and bigotry.

["Besides, nobody is saying that you have to spend time advocating against every claim of prejudice against men/white people, only the ones that actually happen."]

This is exactly the kind of stupid shit I was talking about. It's not the job of feminists/racial equality activists to spend time advocating against claims of prejudice against men/white people *even* if they're true. You wouldn't expect cancer researchers to devote time and manpower to researching heart attacks. You wouldn't expect cat rescues to spend resources on handling dogs. Placing that kind of expectation on the shoulders of women/racial minorities who, by definition, have less resources than men/white people is just a backhanded way of reinforcing the status quo. Men/white people can handle their own shit with their own vastly greater resources.