Getting rid of the problem's source won't solve the problem in this case. 
The problem here is that he hasn't violated any rules, he's pissing off
writers left and right yet he still manages to stay within the white line. 
Tybalt and WW can't ban him because he didn't post Spam, he posted
pointless, rude and inadequate C&C, which is not a crime against the ML. 
What we need is open-mindedness and clear thinking.  Oh, and if you're
reading this  Mr. Always smiling critic who lives under the bridge, we will
be expecting a fanfic from you.  You accepted a challenge, I would think
you have the balls to deliver.