It was just a response to one of the comments. Doesn't have much to do with the thread, sorry. You are completely right, a nudist beach in question is not really a public space.
I am not actually sure if you can be naked in your home/neighborhood in the US regardless of anything; I think it really depends. If I go out to the balcony absolutely naked (I live on the 1.5th floor) and a police officer walks by, will they ignore me? There is probably a certain reasonable threshold: be naked all you want, but do not expose yourself for everyone to easily see you. Also depends on the state, probably.
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Don't get me wrong, I'm all for allowed public nudity everywhere.