Have you looked at crash test data? Truck based SUVs absolutely are not safer in a crashBullcrap it's our god given right to drive around in the biggest most wasteful monster we can while we sit idling in bumper to bumper traffic!!
We have a sizable suv and every weekend I'm playing Tetris trying to pack it. During the week though it has one occupant. Total waste of space BUT it's safer being in this SUV than it is being in a tiny car when against a truck. This it is a daily driver for wife and not just a weekend adventure vehicle.
If they force people to downsize their vehicles I would consider a smaller vehicle with a roof topper storage.