Before I retired my customers would wish me"Happy New Year", "Happy Hanukkah", "Merry Christmas", "Happy Halloween", "Merry Meet", "Happy Friday", "Happy Birthday", "Merry Monday" or whatever.
I never responded with anything but "Thank you" or "And to You" or responded in kind.
Of course we could all make out little pieces of paper with options for a greeting and hand it to whoever we wanted to greet so that they could choose what greeting o-fended them less.
Alternatively maybe people could paste a sticker on their forehead with their preferences. That way they would either 1) not be o-fended by a greeting someone chose to give in good spirit or 2) be ignored and given no good wishes ever.
People get way too o-fended over stupid stuff these days.