The USA is the only country I know of, not to get them
The UK, Australia, Europe has them.
The UK doesn't have to have them although there are cars in the UK that also have headlight wipers as well as Spray nozzles.
Same with the rear foglight, it is a legal requirement in the UK to have a rear foglight, I don't know about the MPS overseas but it must have it, Europe also gets them, look at all the european manufacturers whose cars are over here, Volvo, Saab, BMW, Audi.
We could definitely use them over here too, especially in really heavy rain, and fog.