Is there much of a gap between "creepy" and "shocking"? Defecating in public is unsanitary, gross, indecent, none of which apply to simply being naked.

Trying to equate taking a dump in public with using a common shower is very much considered prude. Of course the stigma attached to the term plus the subjectivity involved makes it fuzzy.

Yes. Creepy and shocking are different. Odd that you think these are synonyms but "gross" isn't. Also amusing that you claim indecency and don't realize that's the cry of the prude.

There's also nothing about unsanitary about public defecation. On the street, yes. But a toilet or latrine is no less sanitary when you take the walls down. It's just not private any more.