Whether or not liking fat people is considered a fetish is something that's been debated a lot over the years. For me, I strongly consider it not to be a fetish, but I don't know the right word for it either. Its the same as how being a gay man isn't 'having a fetish for men'. [Warning, soap box moment here] I think society likes to dehumanise fat people and classing those who find them attractive as 'fetishists' is just another way of doing that. Fetishes are treated by society as abnormal or deviant and the love of a person with a fetish is seen as invalid ("He just has a fat fetish, he doesn't actually love YOU"). So calling FAs fetishist is another way of separating fat people from the rest of society whilst devaluing their worth and the worth of their relationships. As in, FAs aren't 'normal', therefore, no relationship with them can be normal/healthy, it has to be exploitative or shallow in some way. This is the type of thinking that 'others' both fat people and FAs and makes it so much harder to find love, and I absolutely hate it.