You need to come visit Earth in the 21st Century sometime. At least among the college students I teach:
- College is the time to practice, exercise, and test out being an adult. Yes it's fundamentally a safer and lower-impact space than elsewhere. If there are some failures along they way then they can recover and be used as learning experiences.
- Students are not having educations paid for by mommy and daddy; mommy and daddy are probably dirt poor or not in the picture. Student's education are being paid for by financial aid from the state (I think 80%) at my school and egregious loans.
- Phones are part of their lives even if they're not physically on the at all times. Most of my students have jobs, children, other family members they take care of, and expect to be available in case of an issue or emergency. Yes, this makes it much harder for them.
Frankly I say this as an lecturer who fought bitterly against having any phones out in the classroom for several years (points off, attendance penalties, etc.) Within the last year I finally surrendered on the issue because it was simply unwinnable and caused escalations up to and including physical threats against myself. Having relaxed that requirement, I've found that counter-intuitively it seems like less of a problem; students do seem to keep them available in a mature fashion, and actually fewer of them are challenging the rule by fiddling continuously with them. So that's just anecdotal, but it's been my pleasantly surprising experience in all my classes this year.