See also https://en.wikipedia.org/wiki/Law_French - "attorney", "culprit", "grand jury", "tort", "voir dire" and so on
I think what you're trying to say is that people who are pretentious and middle-class (who in your experience are affluent white Americans) like to reach for Latin words because they sound grander. Orwell had a lot to say on that in Politics and the English Language:
https://www.orwellfoundation.com/the-orwell-foundation/orwel...
> Pretentious diction [is] used to dress up simple statements and give an air of scientific impartiality to biassed judgements. [...] Bad writers, and especially scientific, political and sociological writers, are nearly always haunted by the notion that Latin or Greek words are grander than Saxon ones