They do? Practically all US showers I've come across, have this stupid shower single handle bullshit.
Leave the shower on your preferred temperature between showers?
Adjust the pressure of the water?
Nah, that sounds stupid; why would anyone want that...
I usually only see those in hotels. Every place I've lived in allowed the adjustment of pressure and temperature. If you live in a place that doesn't, you can also buy shower heads that can adjust the pressure btw.
There are plenty of options in the US for adjustable pressure. Mine has pressure on the big lever, and temperature on a smaller level. It even has pressure compensation when somebody flushes a toilet, so there's no temperature change. But the type you show there does seem to be the default selection for new construction.
That's not true at all. The ignorance in this thread is absolutely astonishing. It's like you went to the US once, spent a week in Florida and now somehow think you're an expert in American homebuilding techniques and practices. WTF?
It absolutely is true. I have a PHD in early XXI century north American showering practices and I know for a fact that 65% of showers in the North East and 66% of showers in the rest of the US look like this, thus, making it a typical American shower. I will admit that there is a debate within my field of research as to how public and hotel showers should be counted but most experts agree with my position that what should be taken into consideration are the shower units, not the number of uses they get per year.