The homework is supposed to be for practice.
I’ve heard multiple stories of professors for undergrads who tried making homework optional, but the number of students failing exams increased dramatically because fewer people did the homework.
LLMs have short circuited a lot of student’s thought process and even sense of morals. A lot of students who wouldn’t copy a friend’s homework or even copy and paste from GitHub have started using LLMs to do their homework. I don’t really know what it is. Maybe a sense that because they’re using a tool that it’s not cheating? Thinking they’re less likely to get caught because it’s not identical to existing work?
I agree that weighting the exams most heavily is the only way out, but I’m sure we’re in for a struggle as universities see the shocking grade drops that come with that practice.