You are right to find the post unattractive. I wasn’t too pleased with myself when I saw it again. But I’ve always reacted badly to grossly overweight people, though they might be fine folks once you get to know them.
I do try to hide the reaction, though.
I notice this hate towards fat people with a lot with freepers - people who should be the live and let live types. They then default to “well, they send my insurance rates soaring!” while ignoring homosexuals and their behavior and health nut marathon runners and their constant knee and hip replacements. Strange. I have no problem with overweight people - they are who they are. They don’t disgust me in the least.