what i think on the other hand, is that big SUVs are there mostly to impress, rather than go off-road.

Myself, i like to categorize the SUVs in two categories.
1. those who are meant to go off-road. Land-Rover, Land-Cruisers, and even the Suzuki Jimney. (i have taken one off-road and it's hell fun)
2. those who act like any other luxury vehicle, but they are just huge. No matter if they drive good or not, they are there to impress. This category has cars like ML, X5, Q7, etc, SUVs that 99% are never taken off-road. More like road-SUVs