Jim Harbaugh as a good coach is a myth. I've always said it.
He did a good job at turning Stanford around, but it was really based on two things: (1) his pro-style offense allowing him to keep any game close by virtue of shortening the game, and (2) getting Andrew Luck, who was going to be good regardless of where he went, which allowed that conservative style to go wayyyyy over the top of its expected success rate.
Then, he got to the NFL, and was at the forefront of the QB-run game. Kaepernick's ability to run the read before NFL DC's had adjusted was the primary driver of San Francisco's success, IMO, rather than Harbaugh. Harbaugh gets credit for building the team around Kaepernick and his abilities, but any number of coaches probably would have gone that way based on the situation.
So he lucked into coaching Andrew Luck, who was going to be a stud no matter what. And he rode Kaepernick to success before NFL DC's had adjusted to a true option offense. And that's why everyone thinks he's a QB whisperer and a great coach.
IT'S A MYTH.
Right. He cut his teeth at a division of football no one cares about. Then he went to Stanford, and through a combination of cheating + a generational QB + great assistants he did some OK things. But the team was *better* after he left.
Then in the NFL, he took over a team with the most loaded defense in the whole league and had some limited success. But was still so impossible to deal with that he got booted to the curb by management, and it's well known that a lot of his players had major issues with him. In fact, there are LOTS of people both on and off the record at every level that have unkind things to say about him and that's *very rare* because culturally people tend to try to not air those grievances publicly.
At Michigan, he comes in and signs ELITE recruiting classes based on his pedigree. Still can't beat his rivals or win anything that matters. So now when you compare him apples-to-apples with other college coaches... what makes him a good coach?
He's not a great program builder like Saban, Dabo, or Smart. He's not a good CEO type like Kelly, Patterson, or Petersen. He's not a talent maximizer like Campbell, Fitzgerald, or Dantonio. He's not a good offensive mind like Gundy, Leach, or Riley. He's not a defensive mind, period.
So what is he? A figurehead that likes sleepovers? A guy who takes credit for defensive performance despite never having played or coached on that side of the ball? A QB whisper with no idea how to coach QBs or run an offense?
He's basically a con man that somehow robbed Michigan of $8mil+ a year and parlayed his name + the ESPN hype train into elite recruiting talent. Once that dries up for him it could get ugly. He's basically a way less charismatic, more crazy version of James Franklin. I think he is the 7th best coach in the Big Ten, and that's being generous.