If you don’t get into the right undergraduate program, you are likely doomed to never become a tenured professor since the whole system is stacked against you, no matter how good you are at teaching.
He also makes a good point about tenure being the only way to influence a department and introduce new courses, etc., which just seems terribly unfair.
A great teacher should be treated at the same level of prestige as a great researcher. Make influence merit based based on contribution to the university on its most important mission: teaching students. Don’t reward mediocre assistant professors with lifetime appointments.
The part about professional managers running institutions now resonated. Imagine if the tech leadership at companies was a bunch MBA’s with no experience in the field.