I mean, that is simply not true.Worth noting that a) a lot of people don't have these facilities and b) using handsfree is just as dangerous as holding it.
I think they need to ban phoning altogether.
I try not to take any calls driving, but in the event I do, answering a call with a press of the appropriate button on the steering wheel, then holding a conversation, is really little different to talking to somebody in the back of the car.
that's wildly different from having to look at your phone handset to see who is calling, finding the button on the phone to answer it, then holding a conversation with it pressed to your ear, and only one hand available to control the car.