I understand where you're coming from. But at the same time - especially where there is any uncertainty at all - erring on the side of consideration for the other artist's feelings might be a better angle. Perhaps a personal sitemail asking if it was intended as a nude figure or just a body-suit (rather than just reporting it) would save some misunderstanding and hurt feelings.

This artist had a fun story going, and has now quit and possibly left the site. Not blaming you, understand, but perhaps contacting the artist might with the explanation you provided here help smooth things over a bit. Just a suggestion, and that would be entirely up to you, of course. Thanks for your response.

"I reject your reality and substitute my own" - Adam Savage