In 1985 I was back finishing my degree started in 1977. In my struggles, I found the rich person in my class had the person paid to cheat waiting in the bathroom.It isn't so much phone conversations. There's always been loud people in public places. It's the media/videos, specifically, that I ranted about. Also, I work at a University. I do agree with most of your points.
I interact with many polite and respectful students. I get called "Sir" frequently. Students here make eye contact, hold doors, and generally respect others.
That said, I saw students cheating on exams with their phones in the bathroom all this week. It literally just happened again. Either they are cheating, or they just like to go into the bathroom, loiter furtively, not use the toilet or sink, and look random things up in stinky bathrooms instead of out in the hallways, or in lecture. They are quite respectful and considerate - except for the fact that they don't realize or care that they are literally pointing their phones (cameras) at me and others in a bathroom.
Imagine some rando pointing a camera at you while you used the bathroom in 1985. Or 1995. Imagine it today, say in a truckstop on I-75. I suggest someone might get their butts kicked.
I truly hope those persons do not become Pharmacists or Doctors. If you need to cheat on a 200 level mid-term then you are failing as a student and an adult. I imagine I could be disciplined (or worse) if I confronted the wrong student for cheating, or for literally pointing a camera at people in a bathroom.
Whatever bias I may have (or that I may be unaware of) means very little when another person has no awareness or concern how their actions affect others.
My kids in a top school now say some express frustration with how hard it is to cheat because they are at the classic point I time when same tough math, chem and physics classes are weeding out kids. My 3 are in engineering, nursing and health sciences so maybe it is easier to cheat in other areas.