So, a professor who the student do not think are teaching them correctly is complaining. Students who go to college has to pay for college or Universities studies which is what those higher education is really, they do not want ineffective professor to be teaching them. That is as if they are taking their money and wages in the future and flushing it down the toilet

He worried about his career and not his student time and money and future wages, yes and this is way he should just zip his mouth. He paid by student not some other group, his students!