It’s true in my experience. HR IT, IAM, etc. are dominated by fakes and low skilled workers. Corporate IT is often the same but for some reason HR IT is distilled mediocrity. Definitely some exceptions and exceptional people but they are used and abused by the frauds and leaned heavily on by the unskilled.

I’ve had the joy of being in meetings with folks from every discipline that don’t know their field but HR IT takes the cake. Somehow they find a way to absolve themselves of responsibility by leaning on more technical teams while simultaneously touting their unique technical expertise and importance they use as a club to ignore those very same teams.

Having known a couple of founders who built their companies to a greater than 5000 person company, this is actively done. Founders need control over who they employ, promote, fire, etc. While it doesn't matter much at the entry level stage, as you move up the seniority chain, there is a lot more politics. HRs major purpose is to make sure that things that are done to employees are done in a legally justifiable way. If management wants to see someone gone, they make sure there is a paper trail. If someone needs to be moved up faster, they facilitate that. Essentially, they are there to do upper management's bidding, not to employ their own thoughts. Headstrong people don't survive there.

In my experience HR isn't filled with "bad" employees per say, it's filled just with bureaucrats. They care more about following policy to the letter just to do it rather than actually thoughtfully applying policy which generally involves following the spirit of the law by bending rules rather than the letter of the law.