> basic_string_view is new in C++17. It sure beats pointers, but it’s a far cry from the kind of safety that you get in essentially any other language (except C): it is a reference with unknown lifetime, and the toolchain does not help track that lifetime.

I a decade of writing C++ I never experienced dangling pointer bugs _until_ I started using string_view. Using it safely in multi-threaded environments is damn near impossible. I now don't let them escape the enclosing scope, and if I have to then I make a std::string from it.