> But all this could be replaced by an abstract class, perhaps some templates... And if you disable stuff you may not need (RTTI, exceptions) then you'd get just as efficient compiled code.

Isn't it just that your personal in-head GPT has been trained on C++ and wants to see it everywhere? It's not so easy to make very small embedded implementations and there's a reason after 25+ years C++ has not made inroads there.