Well, your definition of bad C++ devs may differ from mine or Google's. Or it might not, but for all I know, you might require knowledge of arcana that I don't care about, even when I happen to know it.

To me success includes being able to find (not frequently replace - I like working with the same people for many years - but find new ones in order to grow) developers that can contribute to the code base, and some of the best ones I know can't be bothered to learn much of C++. Go figure. Maybe you and I legitimately disagree because we work on different things, and maybe one of us is wrong.