Source?
Sorry, but I just don't believe that for a min.
The issue of increased chance of rollover has already been covered.
Additionally, any SUV is going to be heavier that it's equivalent hatchback, which is going to have a direct impact upon it's ability to stop (or NOT as the case may be), and that has nothing to do with brakes, more the absolute capability of tyres to stop a heavier vehicle.
In short, you're paying for basically a jacked up hatchback, which costs more, weighs more and because of it's weight, is less safe and consumes more fuel.
And why do I care?
It's usually some SUV that's tailgating me because he "feels" safer in his lump of lard, and when he does overtake me, presents a visual obstacle that's higher than my vehicle and often has privacy glass, thus reducing my own ability to see what's infront of him.
It’s those simple physics you talk about. Weight plays a vital part in protecting the occupant. It has more momentum, but that momentum transfers energy to the other car, creating more damage to that car then the heavier car.
Here’s some stats for you - they’re from the US because unfortunately no one has yet found a proper set of data for the UK (and this argument has been had multiple times on this forum).
https://www.iihs.org/ratings/insurance-losses-by-make-and-model
Personal injury and medical claims are the columns to care about as they relate to the injured person).
As said earlier, my feeling of whether the vehicle itself is useful depends on the class. The small ones are usually smaller inside than their equivalent car, but the larger ones have significantly more practicality than their equivalent hatch. Which is the more practical vehicle out of the Honda Civic or the CRV? They’re both on the same platform...
I think your last paragraph sums up your real issue. Projection... Personally I’ve always found the Audi and BMW driver in their A4/6 and 3/5 series saloons to be the biggest ***** on the road, many of them damaging my car by overtaking unsafely and cutting in too close, pebbledashing my car in some cases. We all see what we want to see, but realistically idiots aren’t confined to one type of vehicle.