Maybe that was true at some point, but they certainly can't anymore.
Speaking with professors around me (at universities on different continents!), they all report that they basically have to give everyone passing grades, they can't tell students off/kick them out of the class for engaging in outwardly rude behavior (eg wearing headphones, obviously playing games/watching videos/etc. for the duration of the class), they have to accept pretty much any request for extension/makeup exams/etc, they can't give a student a 0 when they've obviously used chatGPT (ie cheated) for an assignment.
If you want to go back to proper academic rigor and study, you have to return authority to the professors.