I hear this a lot, and while I generally agree with it, I feel like it ignores the significant counterexamples. You can argue whether Elon Musk and Steve Jobs were good leaders, but I think it's difficult to argue they weren't able to accomplish something uniquely remarkable. In my experience, good leaders may not micromanage but the best leaders are able to, and often do, "get into the weeds" and are actually able to understand and act on the nitty-gritty details even better than the people doing those jobs.