Enjoyable read! Maybe a bit long. The student that plagiarized the academic integrity pledge blew my mind.
I think distance learning during the pandemic facilitated this behavior enormously, and made it cross the line of cheating.
During my bachelor, student associations had (public!) wikis where students would dump the questions they remembered from exams. Those archives go years back, so you can see questions reoccur often. Just an example. There were even people who solved every single problem in a textbook and published them in Q&A form on Github: both are great test prep resources.
Of course, the difference is that you can't copy-paste from these resources in a closed-book, paper-and-pen exam. If a professor reuses an exact set of memorizeable multiple-choice questions ever year, it's kind of on them that students seem more knowledgeable than they are. In the case of this article the cheating was obvious, because memorization was not even involved. But I think professors should expect students to refer to old exam questions as test prep, and I wouldn't directly consider that cheating.
Not going to lie; there's a very good chance I would have joined in on the cheating if I was in that WhatApp group. At least for the quizes, maybe not for the midterms.
That one "superstar" student that removed themselves before & after the midterms shows how hard it is not to cheat while being in the group, when you define cheating as "seeing group messages”. The professor wasn't really clear in the end on exactly what they considered cheating.