This is pretty much spot on from what I experienced.

Despite the name, it wasn't just filled with, "hey, look at this fat person, fuck them. " It was mostly directed at other people's obesity/fat promoting causing issues for others - taking up multiple bus seats, convincing people to give up on diets with pseudo facts, encouraging obesity.

There wasn't hate for larger people in general, just hate for fat people that felt their weight gave them a right to act entitled and pretend there was absolutely no way they could change their situation.