Yeah the answer is definitely somewhere in there. My issue right now is that my engineering team is dealing with very pushy project managers that are quick to escalate. And if they get past me, they go right to my director. So the whole day feels like running defense to get my team to be able to focus on their work and avoid letting stuff get past me up to my boss.
I haven't read much management-focused literature for the same reasons you describe. However I have recently read Essentialism and am currently reading Deep Work - and so far they've been valuable reads.