LLMs are perfect for those who are at the beginner-level with some language, or with rather simple code that is not very business-specific, or solving/implementing tidbits that are isolated from the larger surface area of a product, or writing utility functions that do something that is well and simply defined, or the boilerplate of almost anything.
However, most of the time spent in programming is never spent on these stuff. They might constitute the largest percentage of the lines of codes written, but 90% of the time is spent on those other 10% of lines.
Give it a CSS problem like centering an object within a bit of a complex hierarchy, and it will go the rounds suggesting almost every solution that can be tried, only to loop back with the same exact confidence. I'd say, in certain cases, LLMs could be a time drain if you don't push the brakes.