A lot of people don't realize how many times the problem they are solving has already been solved. But after being in the industry for 3 decades, very few things people are working on haven't been done before. They just get put together in different combinations.

As for AI, I have found it decent at wruting one time scripts to gather information I need to make design decisions. And it's a little quicker when I need to look up a syntax for a language or like a resource name for terraform. But even one off scripts I sometimes have to ask it if a while loop wouldn't be better and such.