These workflows, from quickly adjusting lcd brightness or toggling bluetooth to utilizing functionality in the Maps app, have devolved from almost-total muscle memory with one or two taps to multiple times that and all over the place on the smartphone display.
People are obviously going to use their phones and heavily navigate with Maps while driving, no matter how much PSAs and campaigning happen. It's sort of like the developers are causing car accidents in the name of shipping off their users' engagement metrics back to the mothership.