This is where I have mine mounted. I have a truck and can barely reach it, so I really can't interact when driving. But when using it for navigation I can glance at my phone and keep my eyes on the road the same as glancing at my rearview mirror.
I think glancing at a screen is different than interacting. And by that I mean looking at a nav screen, seeing who is calling, seeing what type (e.g. email, text, other) type of notification came in. Things that take less than a second to see. Not reading or responding to texts, email, social media.
My phone calls and texts are through bluetooth in my truck with controls on my steering wheel, and I don't like talking on the phone anyway. That said, I'm not distracted by it.