I personally believe texting while driving to be the main issue.

The number of times I’ve seen people cars swivel around on the highway texting can’t be counted.

If I’m driving with someone and I see cars behave erratic I usually bet the driver is texting. Mostly they are and it’s just too obvious - it’s for some reason a specific pattern to it. I can’t be alone in noticing this?

I dont know if from safety point of view using voice command is far less unsafe than using buttons. Prolonged conversation on phone (handheld or free) is quite different.