It really depends on what kind and of job you do.
If it's not something very common LLMs could end up generating random code.
Also if you work on something performance critical, you can get inspiration from LLMs, but they often don't write fast code.
not my experience, they write fast code, and if you ask them to optimize, can pull all kinds of tricks out of the bag. Even with some of the niche stuff I work on, they seem really good.