I do wonder if there are FAs that are similar to the Gay Homophobes. They don't like what they are attracted to and are in this cycle of repression and self-loathing. They hate fat people because fat people give them feelings they feel they shouldn't have. Society tells them that fat people are gross, ugly and you shouldn't find them to be sexy. The fact they find fat people to be sexy is horrifying to them.
The jokes with these people is them being grumpy and crazy and secretly looking at porn related to their interests or going to sex clubs/paying prostitutes to indulge in their forbidden desires.
I heard of a fat camp counselor in a simpsons episode interpreted as this. He is eccentric and yells a lot. At the end of the episode, he says that he and Homer will have to stay at a motel naked in front of the bed and goes into a rant of Homer eating a cheeseburger. I wonder if he is one of us, and finds his desires to be bad. He's ex-Marine, can imagine how forbidden fatness is there. Plus as a fat camp counselor, fatness is said to be unattractive and unhealthy and his job is to give fatties their happy endings. If he's repressed and full of self-loathing. Plus he has to starve those poor fatties. Would any of us be unhappy all the time if we have to starve fatties instead of giving them food? That if we were in charge of fat camps, would we rather feed the campers junk food, have them embrace their curves and see them burst out of their outfits?