He can simple use ad block plus or similar to hide the view of a specific avatar, if there is only an "user complaint". I think theymos should receive a lot of "complaint" by the community and after he can 'act' but now it seems there is not the case.
Sorry, but i don't see only 1 user complaint at least after re-reading the last 3 pages. I see a few more. However, I think that following the re-introduction of avatars some users are simply trying to test how much extreme/illegal/objectionable/etc images are allowed to stay.
Personally, I would like a clear boundary set by admins and put among the sticky rules.