That's the problem with policies like this: they might apply them to everyone. If a feminist tweets "men are scum", they are going to get in trouble. If some white supremacist wrote "anti-whites can fall off a cliff", I suppose many would support removing/banning that.

You won't get large companies to officially make value calls and say "no, it's okay if this user says that because they are part of a special group", they will be too vulnerable to public/media/political pressure, especially in a culture that is generally pro free speech.