Numerous occasions he pressed high and wide against Benfica in midweek, so to me, it does seem like he's criticised for what he does do (as well). Because some people don't see it, so it didn't happen. For anyone to suggest that Makelele covered more areas of the pitch than Carrick is just crazy/ludicrous.
To me, he's criticised for not doing enough all-action stuff more than his passing, because when he's at his best it's not hard to see how influential he can be with his passing, it's when he gets timid and plays conservative passing that people focus on other parts of his game...and then either ignore them, or can't see them. People keep comparing Carrick against this mystical complete midfielder (AKA Roy Keane) and of course, he falls short. But he wasn't bought to be that. If he was, if Sir Alex expected him to dominate teams with his physique, his mentality or his passing...he dropped a bollocks. I don't think he did though, he was bought to a good team player, a very able partner to someone else who will dominate the midfield, and he'll make it easier for them. I've no doubt that if Busquets was here he'd be roundly criticised every other week, not because people can't appreciate his style but because people don't want to, they're looking for an all-action, box-to-box, dominant midfielder and anyone who doesn't do that, or doesn't dominate the play with his passing (see Anderson consistently criticised despite his other good attributes, because he wasn't the new Scholes) is going to fall short. Not every important player has to be an exceptional individual.
There is one criticism that I think almost everyone agrees on - his inconsistency. When he's playing well, as he was for 3/4 of the games from January onwards last season, then he's not sloppy, not a regressive passer and doesn't slow down the play - he keeps us ticking along perfectly, feeding the attackers in good positions and early. This lack of unerring self-belief is the only thing that holds him back from being a player who starts every game (aside from being rested) just like Anderson is developing into now, IMO. He doesn't need to make more tackles, he doesn't need to make bursts forward into the attack, he doesn't even need to be immediately noticeable for me; he just needs to keep us ticking smoothly. As it is, he hasn't found that consistency for 3 years now and he's on the verge of becoming just a rotation player, a player who comes in for specific games and a player who comes in when others are rested. Even at that, he's one I'm very grateful to have.