I actually am genuinely interested in that fellow’s reasoning behind believing both that his job of managing people is successful, and also that all the people he managed do not like being managed by him.

Anecdotally, I have encountered workplaces containing a manager or employee that was universally disliked, and it was never because they were doing an awesome job. They did appear to think that people disliked them personally but benefited from their results. Often they seem to also believe those results would be unachievable in ways that do not produce the distaste. I am not sure these contradictions are entirely defensible.