The criticism's mostly aimed at the club, not him. He's out of his depth and that's not his fault.
If we're talking about his abilities though I must say his complete lack of pace worries me. To overcome that you've got to have it between your ears and he just seems like someone that'd take a long time to acquire that.
Honestly, though. Signing solely him for so much money when you've got ready made PL strikers available for less is looking ludicrous. It typifies our brainless recruitment policy. We deserve relegation on the back of such decisions.