I get your protest but I'd say you could show some class and abstain from behaviours you also find hypocritical.
Anyway since reading your messages here you're not the one to blame and what you say actually makes sense so I'd say do what you want. I trust your judgement, probably a positive rating to a troll won't stay there forever. Or even if it does, w/e.

The other thing though is that people do actually care about ratings in their profile. Whole Satofan is too much of a troll he's surely been taking advantage of this.