The problem isn't Slimboli but the "Slimboli Effect." Slimboli seems to have sense enough to know when to say something and when to keep silent. Other members of the forum aren't so gifted and, wanting to be like Slimboli, flame the new guys for asking old questions or for proposing trades in places other than the trades board.
Then the herd of Slimboli wannabes piles on and collectively call upon Slimboli to publicly rebuke the offender.
The "Slimboli Effect" wouldn't be a problem if every post, and every member, that violated forum rules, both written and informal, received the same treatment. But they don't.
And there, in my humble opinion, lies the problem. Not Slimboli but the "Slimboli Effect."