How many people actually believe body positivism deep down? For example, how many people would see zero difference between, all things being equal, dating a th

How many people actually believe body positivism deep down? For example, how many people would see zero difference between, all things being equal, dating a thin person and a morbidly obese person? I'm sure they are out there but I would guess it's very rare compared to the number of people that are body positive in words but not in actions. I suspect that body positivism wouldn't have that big an effect because most people don't actually believe in it.