No, no, no, he should be subbed out 100% and is especially useless when they are down a goal (plus doesnt really work with Pirlo so well), but just that people should have some perspective.
As I said, he just came back from a big injury, and last game played 55mins, and this game so far 45 mins. If also this performance was the norm for him, I would understand, but as I said, he was really strong and vital player for Milan before this injury. Takes bit more then 1 game to get back to his usual self after being gone for so long.
But as a player, even if Lippi wants to play a DM due to playing 3 forwards, Gattuso in this state is useless, rather play Palombo if he must have a DM.