My team lead was the least competent person on the team. This was constantly frustrating. When it finally bugged me enough to look around, much better pay was available. So that pretty much did it.
My current manager, one of the best I’ve ever had, is much the same. Technically not superb. But at least pretty good. Also a great listener, and really keyed in to what the team is up to, struggling with, contributing, etc.
The TL I had the issue with very much behaved like an IC, almost never met with me, seemed to be dialing it in most of the time, and just generally was very hard to explain things to. An absent parent, more than a bad parent.
Key points to bad team leadership: bad or no communication at all with your team members, no clear vision/direction, lack of ability to delegate.
What's a polite way of telling someone "Lead, follow, or get out of the effing way?"
Saying it during the exit interview would probably have the most impact.