You're supposing that there existed a virtuous past in which parents taught their children respect and that if we returned to that past, there would be no need to ban smartphones in the classroom, and you believe that even though this virtuous past had no smartphones.
you’re saying the complaint is that in that era it was also thought of as a new phenomenon.
That makes some sense - it’s been a declining slope, with a huge drop-off point.
But was there also evidence of less-competent people coming out of the end of the machine that’s supposed to produce people to keep the civilization functional?
Probably happened at one time or another - but it was probably also considered a problem……
My original “as a default” verbiage is doing a lot of heavy lifting, but is there for a reason.