Arteta has him and his team completely figured out by this point. He has learned his lesson well after the first game. Arsenal went naively into that one and got punished. Ever since then, he knows we are completely useless with the ball and the only danger we ever pose is on the break. No need to press high and expose themselves when it's just a matter of time before the ball is given back to them. And that is what they have been doing in the following three games, probably to a fault in regards to the scoreline.
Yet after every game you have the same type of people who think that we have "looked good" on our own merits, despite never looking even close to anything at any point during the match. Today is no different. Arsenal looked in control for the vast majority of the game. Another day and they score 3 or more. And that day always arrives, like against Crystal Palace.
He has another 2 games to do something, just anything to prevent a total disaster of a season. Finishing behind that Chelsea team... that alone should be grounds for immediate termination.