USian has a self-evident meaning: a person of the US. it’s certainly more clear than “American”: a phrase which i struggled with for years as a child because i learned about continents and geography before i learned about countries and genealogy, and hence had to un-learn some of the associations i made with the word early on (despite having been born/raised in the US!)
USian lacks a strong connotation for the vast majority of speakers at present. i’d like a chance to explore it as an alternative label at least for describing myself. as demonstrated by neighbor comment about “yankee” or “ham radio”, it’s the recipient who grants power to a slur — not the speaker. so if you’re a USian like me then get over yourself: don’t deny yourself (or me) the opportunity for a better label.
That's not going to make anyone happy. It's Türkiye.