Well for the time being he's done considerably better than Henne has performed and better than Orton (god forbid Ross hadn't stepped in on that fiasco). Whether MM gets better or worse, remains to be seen, but personally I'd rather have him starting than the above 2 and buttfumble ... and maybe even Ryan Fitz for starters.
Everyone can piss and moan about him, lamenting the passing of their heartthrob Henne, but the fact is undeniable that at the end of the day, Moore provides the best opportunity to win (although I suspect some of the pissers&moaners are complaining exactly on account of that reality.
Dear Math, please grow up and solve your own problems, I'm tired of solving them for you. -Anon