I doubt it, universities basically choose between C & Java as the main if not only teaching language. Sure the former might evolve into C++, but it somewhat inherently starts as C, and I suspect you didn't mean 'C developers' to exclude people with C++ experience anyway?

An organisation worried about it can easily hire grads/juniors with a corresponding proficiency, and ensure that they still have that by the time they're seniors by employing them to work in C.