The equation is just a loosely related model. If you don't understand the difference, further discussion is futile. Just to be clear, your theory sounds plausible, but without supporting data it's just that.
Take it up with Gottfried Leibniz whose experimental data showed the relationship between Kinetic energy, mass and velocity. The formula has been proven since the 17thC, unless the object in question is traveling close to the speed of light when classical physics models aren't adequate. I doubt many drivers get to speeds where classical physics is no longer a good model.
OK guys - keep spamming the police with reports of people sitting in their stationary cars on the phone. Super easy way for the police to pad their conviction stats in an attempt to demonstrate their usefulness. Do post these things on YouTube, people being harrassed by cyclists for marginal infractions is hilarious stuff (to be fair, only CyclingMikey has these kinds of videos that I have seen). I'm sure it goes a long way towards spreading the love of cycling and cyclists.
Definitely advocate for more restrictions on phone use in cars only. The relevant rules of thumb are "if it is possibly related to at least one death caused by a car a decade, then it deserves a ban (the equivalent logic does not apply to cycling because) ", and "doesn't matter if this could also apply to cyclists, cyclists have much lower kinetic energy". This will certainly seem super-reasonable to everybody.
I just hope all this is done after all the close passes and other cases of actual dangerous driving are meticulously reported and eliminated from the streets, while drivers would not even think of parking in cycle lanes as that would pretty much guarantee a "community report" and a ticket. One can dream.
These are kind of related. Firstly, someone using a mobile phone when the car is stationary in traffic is losing awareness of their surroundings plus it is highly unlikely they are going to stop using the phone when they start moving again, as whatever they are doing on the phone is unlikely to be timed with traffic. I think we have all seen the scenario where the lights go green and a driver is completely stationary and utterly unaware of their surroundings having been buried in their phone. They get beeped and suddenly surge forward as they are transfer attention from phone to road. There is no way they will have the awareness of their surroundings required for operating a car especially in a heavily populated urban area. In fact, I have witnessed a pedestrian get hit by a driver doing exactly this, and they were right in front of the car! Luckily not hurt, but it shows how distracting mobile phone use actually is.
If someone is either unwilling or too stupid to stop mobile phone use whilst in charge of a vehicle, then it is highly likely they are also pretty willing to commit a wide range of other violations you mention above - which often carry a smaller penalty if caught. That is, mobile phone use whilst driving would seem to me to be a strong indicator that the driver will have very poor standards in other aspects of driving.
Bike Cammers like cycling Mikey are making an offence that is unlikely to be detected into one where hopefully drivers will realise they may get caught and this will modify behaviour.