I agree it would be great for him to have a lot of love and handholding to get to the point where he realizes that he's in the wrong. And equally that it would be great for him to get enough support that he goes on to edit other things.
But honestly, I don't expect that he would ever do that. He's a legitimately busy and important guy, and he also clearly thinks he's pretty darned important. He wasn't really willing to engage seriously with Wikipedia or to take a little time to understand what was going on. All he really wanted to do was bitch until he got his way, or until he got tired of bitching.
So although I agree with a lot of your concerns about Wikipedia's user-hostile software and newbie-hostile community, in this case I'm not so sure there's a problem. I have actually spent time calming people like him down on AfDs; it's a thankless job. Maybe it's better for everybody if people promoting their pal's pages just go off in a huff immediately without further taxing the patience of Wikipedia volunteers.