The thing about nudists is, they rarely have toned and buff bodies. They usually look like what they are, which is middle-aged people with average bodies.
I read a book of essays by a female writer once - I don’t recall her name but she used to write for The New Yorker - and in one of them she lamented that American men spend very little or no time without their clothes on, unless they are showering or whatever; in other words they don’t spend any time or much time just being in an unrobed state. I puzzled over that sentiment a long time, years even, because I didn’t quite grasp why that was a bad thing in and of itself. I think she felt that you can only fully express your authentic self when your clothes are off - with them on, you are engaging in a form of play-acting: you are assembling a self based on some other role you play, such as hard-charging boss, fun-loving bohemian, hard-working employee, etc.
I don’t necessarily subscribe to this view, but I can’t disprove it either, so it probably has some merit. I tend to see our clothing as an expression of our self, not an attempt to disguise or obscure an authentic self. I’m not even sure I believe in an authentic self as far as that goes. But it’s an interesting perspective that deserves some consideration.