Counterpoint, I wonder how much American culture makes people more willing to be in their phone while their vehicle is moving. The toxic work culture, the disregard for others, and so on likely contributes to a higher use of phone at dangerous times. Especially since larger cars are more about lethality.

What other developed countries have a 60+ hour work week in this day and age?

Edit: thought of a few in Asia but they all have public transportation so they can safely have their 1 hour "me time" commute. If Americans wanna play their mobile games to relax they have to do it in a car, oof.