From what I have observed, there is a tussle between Eng managers and HRs for supremacy, plus few HR folks have overly inflated ego. A friend of mine was asked to relocate in a firm, she refused due to personal reasons, she was harassed daily by the HR fellow, daily he asked her to come to his cabin to mert at 10am and never did meet her and when he did meet her he basically threatened her. (She lives next to a HR person, she was told by her neighbour that "this is what we are paid to do, you should have recorded his audio and threatened to leak audio in public, he'd have come begging to you").

This, well, this is what the dark side can be. Of course, at the end of the day it depends on the org and the kind of people we let grow, if the people in our org are good, capable then it is fine, but from the words of that HR friend of my friend, that's the job of HR.