The mainstream body positivity movement has faced criticism for being co-opted by thin, white, able-bodied influencers. Naturism, by its very nature, is democratizing.
You stop criticizing the shape of your thighs and start appreciating that they allow you to walk on the beach. You stop worrying about the roll of fat on your stomach and start enjoying the freedom of movement. In naturism, the body is celebrated as a functional, living entity, not an object to be judged.
However, the commercialized version of body positivity we see online often falls short. We are told to "love our flaws" while still buying anti-aging cream and waist trainers. This creates a paradox: You are supposed to love your body, but only if you are actively trying to change it.