Same here. I thought it was nailed on.
To follow Ferguson they really did need a massively respected manager with a very strong personality and quality track record. Moyes wasn't, and still isn't, either of those things.
If Ferguson was the long-established, no-nonsense teacher at school who would destroy you if you messed about, Moyes was the supply teacher drafted in who no one respected, and as a result, discipline and performance was always going to drop.
With Ferguson, they had a highly disciplined and professional outfit. Since he went they have become more and more undisciplined and unprofessional as time has progressed.
Your school analogy is spot on.
At junior school in the 60’s. (all boys!) we were all in awe of our headteacher. He was no nonsense and was not averse to using the cane (but surprisingly never really used it that often). We had to actually salute a teacher before speaking to them. (I kid you not). He had taught the older brothers, uncles and fathers of our generation. Our parish was one of the most deprived in Liverpool and a tough place to grow up.He was a committed christian/socialist and one of the most important things he used to drum into us was that the NHS was worth defending at all cost.
Above all, we just knew he cared about us, even the real villains (and there were some right criminal prodigies in that school)
He retired just as we entered top year.
His replacement, I recall, was a smiling man. He came in with lots of good ideas and a desire to change the school as he saw for the better. His solution for a kid who swore in class was to get him to pray with him for forgiveness. He wasn’t strict, he didn’t use the cane, and used to smile benignly at wrongdoers, before using the power of prayer to put wrongdoers on the right path.
He took about one week to lose the respect of the kids. As older kids we could also sense he wasn’t in charge of the staffroom. There were lots of things in that school that needed change, I now know there were better ways to learn than the ones we had. But a nice man wasn’t the answer.
We went from a leader to a caretaker manager. Even aged 10, we knew he wasn’t right.