LLMs can write a polite email but it can't write a good novel. It can create art or music (by mushing together things it has seen before) but not art that excites. It's the same with code. I use LLMs daily and I've seen videos of other people using tools like Cursor and so far it looks like these LLMs can only help in those situations where it is pretty obvious (to the programmer) what the right answer looks like.