Public schools in the US and most religious upbringings (not all) teach blind submission and deference to authority. Students who question things too much are deemed troublemakers obstructing the teacher's valuable dictation time. Repeated offenders are referred to a psychiatrist for a ADHD referral and subsequent drugging and parents who object get a DCS referral and their kids rehomed in foster care where they are often then subjected to physical and sexual abuse.

It's not surprising that such disadvantaged (public school) students would so be in awe of what they perceive as the unquestionable authority of professors that they would not ask questions as that is what our public school systems (most not all) train students to do - remain silent and memorize the words of wisdom being imparted to you. There will be a test.