Just chiming back in…have you seen how big Australia is And spread out…I live in the third biggest city and the next closest is at least a 12 hour drive. People regularly make these trips for events (and further). All towing with our “too small to tow” vehicles! Our speed limits are usually 70mph on the highways, although a good chunk of people go faster.
A very common destination within a couple hours from me is up a steep steep mountain that is notorious for big trucks failing to break, has gravel arrester beds everywhere the whole way and people manage just fine. Again though, I’ll acknowledge our trailers are likely more like European ones than American ones so generally lighter etc.
Less so now as they don’t manufacture them anymore, but it used to be very common to see people towing with rear wheel drive utes…which were essentially a sedan with the boot replaced with a tray. Admittedly I would never because I’ve seen too many get stuck in muddy situations where AWD/4WD got other people out, but it really does seem to be an American specific attitude that you need giant trucks.