The arguments against this sort of law remind me of the people who think it's OK to "have a few drinks" before getting behind the wheel.
1: Using a handheld device is a totally different animal from an installed navigation or infotainment system. The handheld device requires the attention to hold, balance, look at (that means keeping it aligned in such a way that makes it useful to the driver) and devoting the thought processes to actually doing what you want the handheld device to do. You can simply ignore an installed navigation device because you're not devoting attention and energy to the complexities of dealing with a handheld device. Want to use your phone as a navigation system? Buy a mount. BAM, it's no longer a hand held device, it's a navigation system that happens to be a phone. Something you can ignore if the ever changing task of driving a vehicle requires your complete undivided attention.
2: Everyone (and I mean EVERYONE) thinks they are a better driver than most people. In fact, you're lucky if you're average. If you think you're one of the special people who can operate a hand held device and drive, you're not. If you still think you are, see the above listed drunk analogy. Drunks think they drive drunk just fine. Follow one home from work when you're done 2nd shift and they spent that time at a bar. Hot mess. Drunks are terrible drunk drivers, because drunk driving gets people hurt and killed.
3: There's no need other than voyeurism or idle curiosity to take pictures of crashes on the highway. You're not helping the authorities. Most every section of major highway in the US and UK is covered with cameras. Some on tall poles, some at intersections. If it's so bad that you're there first and the authorities aren't, then maybe you should be stopping to help. Otherwise, you just want to send a picture to your buddies or post it on social media.
I used to text and drive, and I thought I was OK at it. Then my wife pointed out how foolish and selfish I was for doing it, and I started taking a critical look at my behavior. It was a OMG moment. I mean, I was really surprised at how many errors I made, and how dangerous the practice is. Now I hook my phone up to car play (for navigation and music) and leave the phone in my console. I just don't do it.
My text message, either incoming or outgoing, is not more important than someone else's safety or property. It's just not a valid trade. Some say they feel as though their "civil liberties" are violated. I disagree. Your rights end where they cause real harm to others. Do as you want, so long as it doesn't break my leg or pick my pocket. Which this activity has massive potential to do both. It's more a violation of the social contract to do so than an infringement on your liberties.
Well, that' my wooden nickle on the subject. Please put your phone down when you're driving. If its so important it can't wait, than it's worth pulling over for. Period.