I understand the French attitude. I’ve read about this before and it’s my understanding that there’s a fear of cultural dilution to the point where loanwords are discouraged and French equivalents are preferred. It’s also the national language and you must demonstrate some fluency to get citizenship.
What I’ve always found funny about the “you’re in America, speak English” attitude is that there’s no national language of the US. English is the lingua franca, and it’s what’s used in official documents (although some official documents are written in multiple languages). There’s no law or requirement to speak it, though.
