Nobody who’s “flipped genders” (to humor your phrase for the sake of argument) is complaining about having done it. The complaints are coming from a subset of cisgender women, who feel somehow that our womanhood is a threat to theirs and think it’s important to tell the world that we aren’t actually women.
I agree that it’s ironic, since so many of their reasons are based on the kinds of sexism that feminists claim to be against. And I agree with you that it’d be nice if these cis women calmed down and stopped complaining about us. Thank you for being on our side about that.