I have bad experiences with “the -isms” on games. Some of those experiences still make me very sad and very angry OOC, years later. What happened to me in the name of “theme” was wrong, and it sucked.
But on a broader view than that: Books and movies can and do tell stories about these social injustices and those who overcome them, as they should. But a MU is not a book/movie. A MU does not have a single author/filmmaker viewpoint, a MU’s content cannot be completely verified or monitored. A MU is about many narratives and many interpretations, for better and worse.
Player A might be great at writing a powerful and nuanced struggle, but Player B might be mid and Player C is reductive and fetishy about it. Public games are not made of just Player As. Everyone has at least once run into some well-meaning person out there who is RPing the world’s worst representation of an oppressed minority.
These stories need to be told. Is a Public MU* the best medium in which to tell them and give them the care and nuance that they deserve? I don’t know that it is. Private, maybe.