Honestly, I think that's a bit of a cop out or a stretch at best; are you saying you wouldn't have a passenger talk in the car to you either for safety? Or are you just justifying the current functionality you only have? Living through the functionality, it's really easy to say "ignore" and that's that -and it's easier to say ignore to a text rather than a real person. Additionally this would also seem to suggest phones shouldn't have the ability to receive phone calls via BT in a car either for the same reason (which actually I'd think would be much more distracting). Interestingly I'd set my Windows phone to ignore phone calls so I didn't have this problem.
I'm really not trying to bash Android or Iphones (each can be excellent choices) but once you get used to this functionality, it's really hard not to miss it or think you are taking a backwards step. Yes, to each their own -but I still miss this functionality