He's making his own mistakes and deserves criticism for that too.
He refused to even meet with Rangnick who could have told him the squad is shit. He seemingly couldn't see De Gea can't play in a possession based team. He picked McFred and then this abomination of a midfield. He insisted on wasting a ton of money on a centre back that was obviously completely unsuited to the Premier League. He insisted on chasing one target all summer with no resolution in sight.
The club will be dross until the Glazers go, but ETH has been completely and utterly underwhelming so far himself, as bad even as Moyes. If he decides to chuck in the towel he's a coward to boot.