To be fair, there are some 1/2 ton pickups that can barely pull their own shadow. You can buy a brand new F-150 with a 5K lb tow capacity. 20' Flying Cloud will max that out in a hurry. If all you've ever known was entry level pickups, you'd think you'd need to go up to a 3/4 ton or 1 ton to get some towing muscle.
But Ford also has F-150 that pulls over 10K lbs. Has Airstream ever made a trailer with GVWR >10K lbs?
You can work hard, or you can work smart. For some of us, working hard is easier.
1989 Avion 34VB, "QE3"
2008 Toyota Sequoia 5.7L "Tug"