> The university insists that homework can't be optional, but it lost its meaning.

The problem is not LLMs, but your university. In my undergrad, almost all the math courses had no required HW. They'd assign it, but you wouldn't turn it in. You'd come to office hours for help on the HW, or ask in class (they'd often dedicate the first 10-15 minutes of each lecture to Q&A).

It was awesome for people like me. No time wasted on neatly presented HWs. I'd do it quickly, verify the answers, and study for the exams.

The flip side was there were many exams (you don't want your grade catered if you do poorly in one exam). A course like calculus could have 4-5 "midterms", and then the final. Often, they'd drop your lowest midterm score so you're allowed one bad day.