> The arrogance of American tourists is truly boundless. How dare Japanese people not speak English! Who do they think they are?

That's not the issue. At least in the US it is unconstitutional to bar inmates from speaking or communicating in non-English languages.

Likewise the US legal system is required to provide you an interpreter who can speak in a language you are proficient in.

Whether these rights are properly upheld in the US is another question but they are rights you are entitled to.

That's the main issue. These are rights that Americans are accustomed to and it's not always obvious to them when they leave the country that these rights aren't universal among developed countries.