Absolutely NOT, it should not be outlawed. We can't ban everything and that's what some people seem to want to do - either that or they're hypocrites because they want to ban some activities and not others that could be deemed distracting.
For example, when a big sneeze comes on you have to close your eyes while driving! Coughing is also quite the distraction. Nausea in pregnant women. Changing the radio station. Talking to a fellow passenger. And the most distracting thing of all? Noisy, fighting KIDS. Maybe kids shouldn't be allowed in cars. ;-)
I feel that it's up to an individual to know what distracts them and what doesn't. For example, I used to know a woman who never used her cell phone in the car, but when talking to you as a passenger would instinctively turn her head to look at you. Clearly for her any talking at all should have been personally banned. But other people pay more attention to the road when they are doing an activity like eating because they're aware of the potential danger. Whereas if they're just driving their mind might wander.
It's not like alcohol, which in every single case affects judgement. Things like eating and drinking (non-alcoholic beverages) may or *may not* be too much of a distraction.
My point is that this is a case by case issue and that I hate generalizations.