If that were the case hands free phone useage would be an offence.
I have absolutely no time at all for those who you see texting/phoning on the move, or stopped in traffic with the phone in their hands/on their laps.
As drivers we all have to face distractions caused by others, but taking your viewpoint Sipar you may as well ban the use of ipods/cds/using the radio etc on the move and all in-car discussion. Particularly the carrying of children comes to mind as notwithstanding they are seated and belted as the law requires, how many times have we seen the driver turn round to see what's up or constantly peering in the rear view mirror to keep an an eye on little Johnny/Suzie?
Putting some reality into this, the actual act of receiving/making calls from the bluetooth connectivity in the 350/370's is no more "distracting" IMO than changing your music/radio station. And unless all conversation is banned in cars, is that taking place with someone remotely more distracting than with those in the car?
The downside, as the OP has found, is the effort of getting the ZEDs system to understand your commands about who you want to have conversations with! But then I get round that by my phone being mounted where I can see who is ringing and if it is another PPP scammer etc they simply get the red-button treatment.......in just the same way as when you turn your radio off.