I think all that matters is that most if not all professors care about teaching. And my experience at top universities has been that most still care about teaching and the grad students they need to rely on is because of the class size. There were definitely some that were basking in their own glory from the past, but those were few. Can’t tell about all universities, but I’d assume it’s the same everywhere. The reality is that given what it takes to become a tenured professor, you’re bound to have at least a few who generally suck at teaching.