You are exaggerating with the "vitriolic hate" comment. Has Keyon received dislike posts here? Of course. But guess what, so has ever single player on this Celtics team at one point or another. You aren't going to see people doing 180s on their Keyon comments, because he doesn't come back the next night and throw up 36 points and win us a game. It's just the nature of the business.
Remember how much people didn't care about Marbury? And then Marbury almost single handedly won us a game against Orlando.
Not exaggerating. Go read some of the game threads mid season or better yet do a search on threads about Dooling and read through them. Vitriolic hate might be soft peddling what was going on here at times.
Vitriolic hate is overdoing it a bit :p
I've been around for many a game thread this season, and sure, he's been chewed out. Most of it though, was resulting direct failures to produce, turnovers or bad shots. Also, it's a game thread. That's normal there

But that's just semantics anyway, isn't it?
Regardless, I see what you're saying, he deserves some praise.