At least in the olden days[1] you could write code for days before compiling, which reduced the pain. Long compilation times has always been awful, but it is less frustrating when you could defer it until the next blue moon. LLMs don't (yet) seem to be able to handle that. If you feed them more than small amounts of code at a time they quickly go off the rails.
With that said, while you could write large amounts of code and defer it until the next blue moon, it is a skill to be able to do that. Even in C++, juniors seem to like to write a few lines of code and then turn to compiling the results to make sure they are on the right track. I expect that is the group of people who is most feeling at home with LLMs. Spending a few minutes writing code and then waiting on compilation isn't abnormal for them.
But presumably the tooling will improve with time.
