And in a way, yes, “spite the haters” is a big part of it. Because the “haters” are in most cases actively abusing or discriminating against us, and we generally like to bring attention to such social issues. That’s the point of political comics. I’d hardly call pointing out evil people and bringing them up as a joke “arrogant.”
Of course I don’t think it was written by an actual terf. But very similar things are often said by them, and I think there is a place for using satire like this. Satirical comics have been used in countless other political issues for hundreds of years (just look at the comics similar to this against King George). Why is it any different or any more “arrogant” in our case?