Most managers I worked for in corporate setting didn’t really care for people. They were loyal to their superiors. And their subordinates were more or less tools for a goal. Most absurd situation was in my previous job where the company hired experienced manager as a developer and suppressed him on every occasion. My precursor and I left that place very quickly. So the people skills from my single data point are not the prerequisite for becoming manager. But again. I am single data point. Maybe there are places where managers care about something else than budgets, timelines and their own bonuses.