Not the person you're replying to, but my main hangup is that LLMs are just statistical models, they don't know anything. As such, they very often hallucinate language features and libraries that don't exist. They suggest functions that aren't real and they are effectively always going to produce average code - And average code is horrible code.
They can be useful for exploration and learning, sure. But lots of people are literally just copy-pasting code from LLMs - They just do it via an "accept copilot suggestion" button instead of actual copy paste.
I used Copilot for months and I eventually stopped because I found that the vast majority of the time its suggestions are garbage, and I was constantly pausing while I typed to await the suggestions, which broke flow state and tired me out more then it ever helped.
I'm still finding bugs it introduced months later. It's great for unit tests, but that's basically it in my case. I don't let the AI write production code anymore
Autism+ADHD life, I can't stand to have emails in my inbox for more than a day and I also can't be diligent enough to achieve that