The only time people cant really see past a 4WD is when they are travelling too close to it.
On your average 50-60kph street travelling 3 seconds behind the car in front there is noticeable loss of visibility. Behind a normal car you’re looking through their windows to the road in front. Behind your average 4WD you’re looking right into the tailgate. Try it out next time you’re in an average sized vehicle.
Unfortunately the onus is not just on you to leave a safe distance. In a city like Sydney in peak hour traffic, a safe distance is very quickly filled by someone who would prefer that slot and is less concerned about stopping distances. I’m sure you see my point should that vehicle be something you can’t see around.