so was Ole the problem? Two of his coaches are doing extremely well in managerial roles
I’m going to try a nuanced position:
Ole did a lot of stuff well, and other stuff not well enough, like Mourinho and Van Gaal before him. McKenna and Carrick likewise.
McKenna and Carrick was a part of collapsing under Mourinho, they were a part of honeymoon and hell, and slow improvement under Ole. They was also learning under Mourinho and Solskjær. What good they do know, reflects both their talents and what they have learnt under Mourinho and Ole - learning from the competence and learning from the mistakes both. After this, they ate good enough to do very good work in League One and Championship. Ole did very well in Norway and Europa League with Molde, Mourinho has done OKish with Roma in Serie A and well in Conference League. These are competent people, while obviously the difference between fighting for 2nd and 3rd spot in the PLand the top, is a very high mark. Strictly, there are no managers guranteed to achieve that.
Ten Hag for me was the best bet around available, and he has exceeded my expectations. And still it is not incorrect to remind that in results, he has not supassed or outdistanced Mourinho or Ole yet. I think he will, and I much enjoy the playstyle already, but it would be wrong to say he has achieved much better results than them. It is not easy to be adamant about potential.
You could think that the potential of Ten Hag with Carrick and McKenna as assists would be better than what we acheived Under Mourinho and Solskjær, but it’s not that simple.
At any rate, I enjoyed football under Solskjær more than under Mourinho, and under Ten Hag more than under Solskjær, and I enjoy seeing Carrick and McKenna do well, so this is the best time for me for a while watching the coaching associated with Man Utd. (Ownership is a whole other and darker matter).