Interesting fact: Talk to Indian upper caste women who claim to be feminists about caste; you'll be shut down quickly. I have had countless arguments only to be named "mansplainer". The activism from powerful groups will flow in the same social structure which does not affect their power.
This sounds extremely similar the ~century-ago situation in American feminism. Lesser right for women of "lesser" racial, religious, social, etc. backgrounds were, ah, not much of a concern.
It's also the same the other way around: a lot of male anti-racism activists / communists / etc were very sexist. Some still are. I still think it's nice that feminists are, today and historically, generally ahead of the curve when it comes to these things.
Quite a few people who are into the "revolution" stuff are there because of the associated macho masculinity. It's no coincidence that Che Guevara is such a popular icon.
Generally speaking, the more authoritarian someone on the left is, the more likely they are to be sexist. Stalinist tankies are the rock bottom.
Hell, I have had conversations with my immigrant mother-in-law where she complains later immigrants hang out only with each other, only speak their own language and should be deported.
In her own language. Just after she's asked us to take her to her ethnic group gathering that is pretty much her only social outing...
Hypocrisy has many shades and people compartmentalise attitudes with issues.