I’ve seen people talk about actors and artists that had a terrible time.
My own would be Anne Rice. She wrote Interview with the Vampire after her young daughter died of Leukemia. Then her husband suddenly died of a brain hemorrhage. I suspect her Christian, anti-fanfic phase was a result of mental illness and manipulation from the publishers, although I don’t think she ever apologized.
Molly, Charlie, Fred & George Weasley were all described as stout-figured in the books. Nobody hates them (well Filch, when they earned it). Neville was also depicted as being round. I don’t have time to list every overweight character on the “good” side; the point you should be able to acknowledge is that she did not make heaviness an exclusively evil trait.
Additionally, most of the antagonists are thin/average. Do you think you’re meant to read them as less-bad people because of that? No, because weight/body type has literally nothing to do with the battle lines.
You should listen to Shaun’s video on the Harry Potter series. He pointed out the meanness towards fat characters and also the way it’s treated differently in “good” vs “bad” characters.