My impression is that there was a sharp shift around COVID. Doing classes over Zoom with a talking head broke the connection they had with their professors and other students. College felt closer to a video game operated through your screen than a community.
When I was in college not all that long ago, cheating was a scandalous thing. I knew a friend of a friend who cheated on an exam with some tricks and it resulted in suspension for a semester. There were rumors of someone hiring a service to write their papers for them and it was a wild story.
Now students have ChatGPT to write their papers and they've been practicing how to use cell phones without the teacher noticing for 10 years before getting to college. Combine that with social media grumblings about how college is "just a piece of paper" and doomerism about how they're never going to get a job or buy a house and cheating starts to look the only rational option to some.
The pattern is not contained to college. Every time the topic of cheating comes up on Hacker News there are more comments defending cheating than I would expect from this crowd. The usual justification is that the system is broken in a hand-wavey way and therefore nobody can be blamed for cheating.