Nobody in their right mind will use `shared_ptr` in this context. It will be `string_view` in and out with lifetime management left as an exercise to the programmer.
I read your parent as saying "assume we start from needing this to be checked," and then saying that this is the best that can be done. You're absolutely 1000% right that nobody would write that ever and would use string_view and not have it statically checked.
