What that will show you is that many people tow outside of their specs. What they don't tell us is if/when they have problems because nobody likes to admit a mistake. Driving through a campground to see what folks are towing with tells you nothing other than some people are idiots. I've seen 1/2 ton trucks towing WELL above their ratings because the truck physically moves the trailer and some salesman told them it was ok.
It should be common sense, but I am beginning to understand how it isn't so common anymore. There is no opinion here, and I can back up any of it with data. Can you? It's just math.
I'll use a 2018 Ram 2500 CTD as an example, since that's what I have.
The HIGHEST payload available for that year with the above is a Tradesman, reg cab, long box, 4x2. Payload is 3,160 lbs.
The average family typically has a crew cab and more often than not a 4x4. Typically between a BigHorn and Laramie trim level (you can check that out for yourself in campgrounds or poll the rv forums). Those payloads are between 1,600 and 2,300 lbs before anything is added to the truck (like a 5th wheel hitch) and before people sit in it. You can get to 2,600 lbs if you have a 2wd.
A fifth wheel generally has between 18-22% of the pin weight sitting on the truck.
Here are some examples of fifth wheel pin weights (all calculated by the GVWR of the trailers @ 20%):
11k lbs - 2,200 lbs
12k lbs - 2,400 lbs
13k lbs - 2,600 lbs
14k lbs - 2,800 lbs
15k lbs - 3,000 lbs
A travel trailer generally has between 12-15% of the weight on the tongue. (all calculated by the GVWR of the trailers at 15%):
Here are some examples of travel trailers:
7k lbs - 1,050 lbs
8k lbs - 1,200 lbs
9k lbs - 1,350 lbs
10k lbs - 1,500 lbs
11k lbs - 1,650 lbs
Based on these numbers, which trailers fall within the ratings of the truck? Most travel trailers do. Very few fifth wheels do. Now... tell me, where is my opinion in any of this?