A few thoughts on this:

- Terry Tao said it best, I think: We're no longer in the heroic age of mathematics. Meaning, I think, that math is now a group project, not just a single person. Many disciplines have become this already, math was just lagging a bit there.

- Other commentors have pointed out that this professor likely hasn't graded anything in decades. I'd bet that he likely hasn't changed tests all that much either. And knowing how extensive the test banks in greek life are, I'd bet then too that many of the undergrad students haven't done any homework or test prep for decades either. Cheating is by no means a new problem. Granted, this is pure horse-crap speculation on me here.

- AI isn't going anywhere, and it seems that this Prof is kinda already throwing in the towel per students. It strikes me as mostly cowardly and asinine and just deaf to anyone beyond his nose. Like, my dude, talk to your students. They are ostensibly adults. They aren't cattle. Figure out a system, together, that actually works.

- My own opinion is that the age of cheap higher education is over. 500+ person freshman lectures at 8:00am? Yeah not with AI. I think it's gonna be more like 4-10 person study sections with a proctor; the Oxbridge system. Yes, that introduces a lot of challenges in the proctor-student relationship. But it's also very expensive. You're gonna need to up your budgets a lot. And unfortunately, that means that this era of mass higher education is also ending. I fear that only the rich, again, are going to go to college.