I do not give 2 shits about people speaking foreign languages out in the ether for the most part. Having said that, there are 2 instances I can think of that grind my gears.
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You order an Uber, and the guy who's driving is on the phone with someone, and is speaking another language with them the whole time. This is more just for the fact that this is shitty customer service for someone who works on tips to an extent. For whatever reason, this seems to only be an issue with foreign speaking people. My guess is maybe they're talking to family back home? I certainly don't tip those people who are doing it, but I don't care enough to call them out on it either.
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As a poker player, they have rules about speaking English only at the table. This prevents collusion. I will absolutely call people out for English only at the table especially when there is a live hand going on.