While it's good to get up-to-date, I don't think anyone should go re-write code or radically change their programming style to use generics. There's no need to over-complicate things. Anywhere that you're either copy-pasting a bunch, or using code generation might be a good fit for generics.
I was in an interview not long after format strings in Python came out (for example, print(f”Hello, {name}”) rather than print(“Hello, %s”, name)) and the interviewer thought I was confusing languages and features, asserted this fact strongly, and was pretty surprised when it worked, but I think overall I lost points because the interviewer lost face.
about 10 years ago I had a discussion with an interviewer (he was actually consultant manager) who said "c# and Java are exactly the same in terms of runtime architecture" which I very much disagreed with when speaking strictly, which wasn't appreciated.
