Compare C++ to Standard ML. Simplicity is compatible with generics.
It is not the case since 1993, when CFront was dropped.
In certain domains like UNIX like OSes, I don't see C ever going away, due to the infrastructure, symbiotic relation with the OS that gave it birth, and the culture.
That's not the case anymore. We have C++ which has generics and "fixed" C's lack of complexity for sure...Now for some 'weird' reasons some people still use C. Wonder why ?