My perception is that C++XY features are wildly used in general. Of course there are some nobody uses, but that's not generally true. So your basic assumption is wrong.
We are at C++20 and I wouldn't like to work for a company that uses an earlier standard.
Well, either you carefully vet which C++ features you use and my assumption still stands, or you don't - in which case I would rather not like to work in your company.
We are at C++20 and I wouldn't like to work for a company that uses an earlier standard.