I graduated university about 10 years ago. One of my degrees was math. It wasn't even that the kids cheated. It's that once they passed through the so-called filter courses like Calculus 2, it was nearly impossible to fail. Even if the courses were difficult, a combination of making the exams easier and grading very leniently made sure all the idiots passed. One of the reasons when I came home with my diploma I told my parents they could have it lmao.