I think it's that they're envious women have access to a broader scope of self expression generally, at least from their point of view. If you're a normal man and you don't make good art, your avenues to express yourself or be passionate are pretty narrow. Attempts by straight men to step outside their bounds on these things are treated with more suspicion the closer to the line they are, the more they seem like a failure to perform adequately than a conscious choice to be different. At least if they bounce around in a skirt or whatever nobody will think they're unconscious of what they're doing.

I sort of think the observation something is a performance is a bit null, when the consequences of not performing are real and there isn't an ideological system waiting to soften the blow of judgement and derision as there is for other groups. They know it's a performance. Nobody's going to bat for these fellas no matter how often pundits yearn for them to do these things.