I don't think it's necessarily people (including me) slagging him off and forgetting what he has been...
My comment in particular was more of a statement that he has just never been the elite defender some have made him out to be.
Loyal servant? Yes.
Always gives his all? Yes.
Decent, likeable guy? Yes.
1 of the best centre halves we've had in the premier league? He wouldn't be in my top 5, might sneak into top 10.
I said it before, and I'll say it again, he has been a long serving, loyal and committed, average player, who had a particular defensive style that can catch the eye when it works out, but can cost you goals when it doesn't. He was bought as a utility player to cover RB/defensive CM and in time became part of a decent defensive unit in a team set up to be hard to break down.
The shouts of interest from Arsenal, I've heard the rumours but there's never been any concrete interest from what I can gather.
Injuries have played a part, and I agree that he was never really the same after the initial injury in 08/09. But now he has now lost some of the pace that made him effective, and unlike other players who have continued to contribute past his age, he's never been the greatest in the air, his positioning is questionable, and he was never a cultured ball playing centre half, so his contribution is marginalised.
He is definitely worth keeping on around the squad, and I'm sure he's a great guy to have in the dressing room, but I just don't think he should be 1st choice any more, and he certainly shouldn't be captain.