I think in 99% of cases they are either intellectually disabled or have a mental illness like NPD/SPD/etc. Then there are the few like Tess Holliday and these other fat phony models who I think are like George Soros or Martin Shkreli--they have a misanthropic agenda, and have found a way to profit from the 99% of fats who are just crazy and/or stupid. Basically the stereotypical shekel-grubbing merchants of obesity.