This seems to be an argument about individual freedoms versus cultural acceptance.
I can understand that people enjoy the 'freedom' of nudity, but as a culture, we have decided that we will not go naked, and I think that society's cultural values should be respected.
I align this thinking by having no personal objection to burkas for the same reason, it is culturally accepted by some eastern societies, and they prefer to carry on that culture here.
I can think of no examples where any culture that lives naked as a matter of course would wish to continue to do so when visiting western countries.
It is a purely personal viewpoint, but I have always found something rather attention-seeking about naturism and nude beaches - rather less a case of enjoying the freedom than enjoying being different, but that is not based on any personal experience, merely a viewpoint.
In the case of this gentleman, I think he is attention seeking, and either has a wish to be notorious, which he achieves, or he has a mental aberation, which should be appropriately addressed.