Saying “He’s got a penis, we’re going to have a boy!” when taking an ultrasound is in no way comparable to the examples of racism and chauvinism that you’ve described.

The comparison here is utterly absurd. Why not throw something about Hitler in there too?

Can you clarify how "X are [optionally, Z] inferior to Y" is the same thing as saying "a person being a man or a woman, and therefore the pronouns used to refer to that person, are determined by that person's sex at birth."? I don't agree with OP, but am disturbed by your comment.