I'm not sure that's what you meant to link to. The description there is beyond lurid, and that guy only ended up on a registry after a lot of shenanigans.
He is appealing his placement on the registry on three grounds:
1. He can't be guilty of a qualifying offense, because he has no prior conviction;
2. The officer who put him on the registry did so solely on the basis that his risk of reoffending was "moderate", when it was also necessary to find that he posed a "moderate" danger to the public;
3. He did not in fact pose a danger to the public.
And the judgment rules against him on argument 1 while ruling for him on arguments 2 and 3, nullifying his registration.
Given that this judgment overturns a judgment below, it is evidence that you can be placed on a public registry for purely spurious reasons. That's what happened originally, and it's what was affirmed in the judgment below.
The guy is not even alleged to have done anything other than exposing his genitals at any point.
I don't think this is socially acceptable behavior in 'normal' society. And in response to his deciding to visibly 'rub one off' (as I believe this term is what results in auto-flagging) towards his neighbor, his response is that she was a "trigger" for him. So he himself is already claiming that he can't control himself, which is more less the entire point of such registries. Imagine you have daughters, let alone a wife. Would you want to live across the street from such a person?
And again I'd emphasize he actually got removed from the registry. So imagine the sort of behavior required to stay on one. It's damn sure not just urinating in public or whatever.
So he was naked in his own home?
#Land of the free
First level? Open and gross lewdness for the home owner.
Third level? Voyeurism for the person outside.