The best bits about American chopper; 1. The office door being destroyed once per week. 2. The 300 sized rear tyres on the bikes.In my opinion that was a major factor when I was a child "look at that rear tyre listen to the sound" and to take that away would be criminal again in my opinion.
You're probably correct in your estimations.
Bike is plenty flick-able for anyone's road needs unless you're some sort of pro road racer, it has never crossed my mind that this tyre is far too wide.
I know the rear wheel is taken from the MT-09, but surely Yamaha has done their research and worked out that this tyre is just as good on the MT-07 as it is on the MT-09