The criticism comes because people self-share how they berate the agents, argue and curse at them. It's right here in the comment section. one comment speaks of causing physical (simulated i guess) thousand year pain as a means of obedience.

it's weird.

LLMs are not beings with thoughts or feelings, and if being mean to them were to somehow yield better results it would be no different than a cheat code in a game, or just constitute as clever use of game mechanics.