Not really but thanks. I do think it would not be hard to flag posts over a certain age, say 3 years for easy identification.
However, I’ve never seen a school that had a policy saying that students who did not put in three hours of homework or studying for every class hour could be directly penalized by loss of credit, reduction in grade, or otherwise. The three hours studying per one hour lecture was explained to you as a best practice that you were strongly encouraged to adopt if you wanted to do well. If you, for some reason (e.g. prior knowledge/study, just that damn smart, have a whiz tutor, just wanna roll those dice and see if you can BS your way through by guessing…), didn’t want to do that, you were gambling with your own success. Any “penalties” levied against you were indirect, caused by your lack of studying causing you to do poorly on assignments and/or exams. There were no timesheets where even though you got a 94 on the midterm exam, 91 on the term paper, and 92 on the final, you got bumped down to an 86 (B) because you turned in timesheets showing an unacceptably low number of hours spent in earning those A grades.