some of these American travel trailers

Can’t forget the boat! For reference, while this isn’t typical, it’s not uncommon. That’s a pretty small travel trailer and boat. I’ve seen this setup with much bigger trailers and boats several times.

Part of the issue there is that for a large number of people the ‘few times a year’ are major holidays when everybody else wants to tow their house-sized RV and boat to the lake for a day or two. The rental fleet just isn’t big enough to service the surge demand.

Indeed. I like ‘Earthporn’ too, but I think it should be all nature pictures that look like genitalia and suchlike. Rocks or trees that look like penises for example.