I have been fat my whole life - actually fat, not, like “non-normatively-pretty best friend character in a romcom” fat - and I really do not enjoy seeing people who should know better act like sullen teenagers at having their emotional support fatphobia fat kink content gently criticized. At being asked, frankly, merely to exercise some minimal critical thought about whether the thing that gets them horny might have some negative real-world impacts on fat people.
You know your fat friends can see this shit, right? It is really not hard to observe when you consider the right to yank it to “blobs” and “whales” a positive moral good, and more important than respecting when other people in a particular shared space find this particular genre of fetish art personally invalidating and degrading, y’know?