Some of us held out the hope that, while he was sorely lacking the experience to manage a big club before he arrived, he might learn on the job. Up to the end of his first full season (the one where we finished third) I still believed that was possible.
Even though we finished a place higher and got to a final, there were numerous indications throughout the following season that he wasn’t learning and that a ceiling had definitely been hit.
Given that he was being “supported” in his job by clueless idiots like Ed Woodward it’s to his credit that he did that well.
Edit: for the avoidance of doubt, I was against his appointment from the start. Not so much because I thought he’d be a crap manager, but because he hadn’t been appointed for footballing reasons.