No, it's not "a universal joke." Many countries have signs, maps, menus, etc. in English because it is such a prevalent language internationally. People in many countries are happy to run into a native speaker of English because it gives them an opportunity to practice the English they have learned while demonstrating generosity and pride in their country to a foreign visitor. So no, the pretentious assholes you may run with are not "universal," but English is by now quite widespread.
And before you bother, the fact is that many Americans attempt to learn something of the language before and/or during their travels. Your anti-American attitude and stereotyping are the real jokes here.
English is widespread because of the British Empire, not because of America. It is widespread because the British travel around the world, and live around the world, far more than Americans do.
I don't 'run into' people. I live and work in various foreign countries and have for over 10 years. I work with people from those countries and other countries in an international environment, not in an American environment. Currently, where I work, there are only 2 Americans, I and one other. Everyone else is from a wide variety of countries. I don't know the actual count, but I would estimate at least 20. In my carpool there are people from 3 different countries. It has been the same in the various countries I've lived and worked in. I am not a tourist, not a private or business tourist. My contact is with the average people from countries around the world. They are not "pretentious assholes," though you are one indeed.
Nowadays, English is the international languge, and it has much to do with business and tourism, and the fact of American's interests around the world impacts that a lot. But, originally, and essentially, the reason for English being the international language today is due to the impact of the British Empire in the past. In most places where one may spend time and spend weeks or months or longer in that area, in the supermarket, for example, you are far more likely to find British foods rather than American. It is the British who live and travel overseas far more than Americans.
The arrogance and ignorance of Americans is quite amazing. You are a joke to people around the world for this arrogance and ignorance. You are a joke because most of you can only speak English and expect everyone else to speak English. You are a joke because you seem to think you are the center of the universe.
Certainly there are people in every country who only speak their native language, but by far more than Americans, people in other countries tend to be bilingual at least, with many speaking more than 2 languages. And certainly there are people who are pleased to meet English speakers so they can practice their English, but these very people are even far more pleased when they find you are able to communicate with them in their own language. Try it sometime.