I think it’s a tad more complicated than this. At least regarding his tenure at Dortmund. The way he handled the attack on their bus is problematic in my opinion and goes beyond what you mentioned. From what I’ve heard from a few Dortmund fans I respect, what he said to the press and what he did internally were very different stories. And the way he seems to have treated their players after that attack was not ok in my opinion.
Other than that, I’m with you. I have an incredibly high opinion of his tactical work and the way he improves his players. I’m happy we got him. I also believe he won’t last very long.
It's true that his handling of the bus attack was poor. And yeah, he probably won't last at Bayern, he is going to publically target one of the execs at some point.