Having watched that one clip of amphibia where Polly claims to have learned fluent Thai by watching rom coms, Thai sounds VERY different from Mandarin.

That being said, I think even this guy is being a bit naïve, the racists aren't mad you're speaking an Asian language, they aren't busting out a phrase book to check and make sure those tones are Punjabi and not Tibetan or whatever. They're mad you're speaking any language they can't understand at all. Why?

Because every last one of these redcaps has an incurable complex surrounding being incensed by the idea of having a fast one pulled on them or their property or their beliefs. They're dead against emergency exemptions for abortion bans and even treating women who miscarry more sympathetically than "with complete and absolute contempt" because they're living in a nightmarish hellscape where literally every woman is already plotting to use those claims to sneak an "unneeded" abortion past them.

They don't see speaking a different language as you just talking, they see it as you talking shit about them because the world revolves around them and why else would you "go out of your way" to avoid them being able to ~~eeves drop~~ overhear if you're saying something untoward? I could be speaking french with my teacher over a culture lesson and these people would only skip the racism to instead accuse me of spying on them and talking shit in front of their faces to rub in that they can't understand what I'm saying.