Exactly, it’s a useful tool that evolved to solve specific types of problems. What people are really worried about is accountability, and that’s what’s really important to focus on. I think another aspect to this is that hierarchies can form in ad hoc fashion even within flat structures. Charismatic individuals tend to place themselves at the center of decision making process, while people who are introverted are less likely to speak up. When implicit hierarchies form that can be a lot worse than when they’re designed consciously, this is a great read on the subject https://www.jofreeman.com/joreen/tyranny.htm