I used the old T9 physical clamshell phone keyboards to text while not ever having to look at what I was typing, driving or not. Lol... The smartphones and screen keyboards make that (feel) thing, impossible and impractical.
Now, I don't text while driving, but I certainly use my hands for other things, like GPS rerouting, changing the music on my stereo, sipping some water. SOON, those will all be illegal as well.
SO I too would refrain from SIGNING any declaration to submit to a loss of freedom of choice... while at the same time I would agree, it is not such a smart thing to do (TEXT & DRIVE) and I don't.