I can't defend him forever. While I still think he'll come back to haunt us at another team, he's clearly not making even the slightest amount of progress and insisting on playing completely ineffective players every game.
The problems are:
A: I don't think he's going anywhere for a very long time. The Glazers won't want to sack another manager, and they won't want to pay him off.
B: whoever comes in will almost certainly default to playing Rashford, Martial, McTom and pals, and they'll do just enough at that point to stay in the team before going back to their usual lazy, cowardly ways. By then, the new manager will feel the same pressure to play them while they sit on their fat contacts and put in zero effort. The cycle continues.
C: Then that manager will also be useless and need sacking, while the players remain uninterested and the owners continue negatively affecting the club.