> That is what writing proper modern C++ is all about, anything else is writing C in C++.

That is a claim that is yours and I do not agree with that. C++ that does not fit your taste of modern C++ does not suddenly become C, it is likely a syntax error in C and when it compiles it has a different meaning. Code that may look to you like C in C++ has C++ semantics, that differs from C semantics.