IMO, after brobro said he was moving on, there was no point to continue the conversation.
It's one thing to discuss things openly (like the chat idea, for instance)...but a "this place sucks and you suck, I'm outta here" post isn't especially productive, nor is it worth continuing since he's announced his abandonment.
Arguing at an absentee OP gains nothing.
He'll see it. Haven't nursery rhymes and folktales told you that trolls don't go away that easily.