Some time ago, I met an HR person at my job. She wasn't actually part of the workplace HR team, rather, she was more like a classmate of mine, but she had worked as HR in the past and wanted to continue to do so in the future. She was kind and polite, so I never had any beef with her, but she consistently had the shittiest, most inhumane takes on how to manage and interact with people I had seen in a while lol.

Meeting her made me arrive at the conclusion that you just said. Empathetic people that get into HR with the idea of helping make the world a better place would eventually resign or, at least, be very ineffective as HR. The only people capable of staying in HR for a long time are sociopaths who don't mind lying and being obtuse in job offers, and ruining someone's life so their boss can squeeze a couple of extra cents. The profession itself only serves to make companies more ruthless and adds nothing of value to the world.