The reason people anthropomorphize LLM's is essentially the fault of the tech companies behind them. ChatGPT doesn't need to have the personality it has, it could easily be scaled back to simply answering questions without emoji's and linguistic flare, but frankly I think the tech companies want people to anthropomorphize them.

The core problem is we need to stop calling LLMs "intelligence". They are a form of intelligence, but they're nothing like a human's intelligence, and getting people to not anthropomorphize these systems is really the first step.