You are looking too deeply into it. They probably just found it funny. Its kind of a slapstick that gets laughs from some people because "hoooo looook im a fat man and im doing some cringy shit with my big fat belly arent i funny" but doesn't mean that the product will sell. Fat men are being shitlorded even by fat women. HAES doesn't exactly apply. TL;DR: Virtue signalling gone wrong. Get a buff black dude and thirsty sluts will just buy it like nuts.