Only in the sense that someone who doesn't know C++ well could be a much better quality developer than someone who does.
If someone put C++ on their resume but doesn't know how to overload operators, they are failing on honesty.
If someone put C++ on their resume but doesn't know how to overload operators, they are failing on honesty.
I disagree. Let me put it this way: You will not increase the quality of your C++ programmer hires by quizzing them on whether they know whether prefix or postfix gets the extra argument, or even how to overload those operators at all.