I think the majority of users here appreciate criticism when it's constructive. Venal, IMO would just bitch everyone out for their opinions without really adequately explaining why he thought they were wrong. He appeared to be "above" that and his later posts were nothing more than trolling. I couldn't give a damn if he was in the business or not, he was rude, arrogant, and thought people should take his word as gospel even when he didn't provide a compelling argument, and sometimes didn't seem to know what he was talking about at all.
His career path (judging by his matte work) has obviously been visually oriented, yet he was a complete know-it-all about scriptwriting, character development etc. Now maybe he does happen to know about those things, but this would have nothing to do with him being a "pro" as they're in a completely different area to his profession.
I guess my point is that the fact someone is a "pro" or not is irrelevant. It doesn't make their opinion any more valid than anyone else's when they're talking about things outside of their professional expertise. And even if it is in their area, they may still go against popular opinion.
Did he leave then? I assumed he was banned.