One of the things that struck me was that almost all of the people featured were at least bilingual. A guy sleeping on the street, fluent in english. Shows how lazy we are. As my daughter of 16 pointed out English is quite likely to be their 3rd language.
Not all to do with lazy, name me a useful language that works in a number of countries – French? Nah limited to France, some African/Caribbian countries, German? Not really limited to Germany and Austrians/Swiss speak in a strange dialect; etc, etc
I’ve spent years travelling on business, and yes, when in specific countries their language would be really useful but English works. Everywhere, someone can speak (and often understand 😉 ) English.