Maybe you can move on, but there is srill, and as far as I can tell will be for some time, a need for knowing how to work computers in exactly the same ways that were necessary in 1970.
Embedded systems programmers probably know all about characters, arrays of them, pointers to anything never mind null terminated strings and so forth.
It is good that some ppl can still be bothered. I don't use libraries much because a certain kind of fun is owning the metal.
And if the pros who know get the big bucks, that is fine with me.
a7