It's all about levels here.

First level? Open and gross lewdness for the home owner.

Third level? Voyeurism for the person outside.

The disgusting, gross lewdness of a naked body. Thank God someone did something.

A peer message quoted the PDF of the things he did, before finally getting put on a registry. It wasn't just being naked in his home to say the least. The message was auto-flagged because of its content.