The education system has always been stupid and it's about time it stopped with it's Victorian era, one size fits all, "the student is needs to be whipped into shape" style teaching.
You do not know your students commitments outside of study. You probably also do not know how best they themselves learn. They have the right to have their time respected as much as anyone else, and they aren't even getting paid for their time and effort
Strict deadlines are stupid. In the real world, illness happens, tragedy happens, bad traffic happens, etc and deadlines aren't always going to be met. Closed book tests are also stupid. In the real world there is hardly ever going to be a time you cannot consult your notes.
Also, because we stand on the shoulders of giants and forever expand the scope of human knowledge, teachers are finding that they have too much content to teach and not enough time to teach it (also lack of education funding and pressure to get students into the workforce as soon as possible doesn't help). As a consequence, students are bombarded with an avalanche of content in a short time, more content than is physically possible for a human brain to retain in such a short time. Therefore, students trying to work smarter rather than harder isn't just understandable, but is increasingly becoming mandatory.
Do I think AI is a good substitute for a real education? Hell no. But I do think it's use among students is the natural result of a broken education system rather than "them lazy students can't think for themselves."
Also I hope this rant doesn't make it sound like I'm blaming teachers, they're doing the best with what the system demands of them. I'm talking more about the whole damn structure of the education system. It fucks over teachers as much as it does students.