I cannot see the Atheist's posts so I went back to see what the context was.
The difference between what Warp does and The Atheist calling a woman a 'hag' or someone calling for someone to slap 'that bitch', is that the latter two are referring to MTG. As an individual, she has earned that name because of her behavior.
No, calling for violence against any women is not acceptable, but only a fool would think the poster was literally calling on someone to slap her. On the other hand, Warp uses his derogatory terms for women in general, going so far as to claim that the women he knows actually like being referred to as 'split tails'. That is misogyny. He determined Rachel Shelf is a 'hag', and a 'screeching Jane Curtain' from watching one video where she is passionately decrying the treatment of the Venezuelans at the hands of DeSantis. He just didn't like what she had to say even though none of it has been found to be inaccurate. It wasn't really about how she said it. But he'll only deny that.