As a kid I worked fast food for a few years, and there was an "English only" on the line where customers could hear. One of our managers was Mexican, and actually enforced this pretty strongly. He once told us about when he went to a Subway and the staff was speaking what he suspected was Hindi, and explained to us all that yeah, it matters sense, you tend to get upset when you can't understand people. They could be saying anything, making fun of you without your knowing, or whatever.

I tend to just ignore other languages (I'm in Chicagoland, there's plenty of them) and an of the opinion that lack of exposure is one of the root causes of ethnic (and of other kinds of) intolerance. A lot of Americans live in their little rural bubbles where everything is samey and familiar, dealing with their little isolated lives, away from anyone noticably different than themselves. They're tribalistic and comfortable there, and don't like outsiders or change. They vote Republican because "people from the city" are bad, and they're Democrats.

It's not a new problem. The root philosophy in the fucking Bible is that "city people are immoral" because its all passed down by oral tradition, and its oldest stories are descended from periods when its creators were nomadic herders. Hospitality for them vs. urban hospitality are very different, and of course anecdotes get mutated through centuries of the telephone game.

TL;DR, lots of people need to meet more kinda of people and it's been a problem since forever.