I'm confused by this take. Explaining things in full detail shouldn't be a chore for a reasonably competent leader.
It's just basic due diligence, and it's worth reviewing details when these topics come up. Maybe the new ideas aren't always fully baked, but they may have a point. Regular discussion is just part of the job.
Would you not admit the corporate world is full of people who probably should find something else to do?
I agree that hostility is not acceptable, but there are some people who take everything the wrong way when asked to perform. I get why it's threatening, but it is what it is.
I didn't take anything away that led me to believe the author was being hostile. He was asking for more effort than some might expect and they couldn't handle it. I don't really know who is right in that situation. What I do know is there are a lot of people who don't take work seriously enough and hide behind HR.
This person admits he drove people to quit with his behavior, that goes wayyyyyy beyond trying to get the full details. I've worked with this type before and I can envision the cold sweats in the office as he comes around to hold people hostage explaining every micro-detail of their work until he understands it.