I have spent years vacationing and part-time living on Maui, Hawai'i. Whenever I'm there, inevitably people in service, neighbors and strangers will say "Aloha!" (hello, goodbye, love)or "Mahalo" (thank you). I never get pissed off and yell back - "I'm not Hawai'ian!". In fact I accept it as their culture being shared with me, they are greeting me in their own way. "When in Rome".
Between Halloween and New Year's Day, we're in the Holiday Season - something like 14 different holidays are celebrated in Q4. If somebody says Happy Holidays to me I'll typically reply with the appropriate holiday greeting I celebrate, for instance:
"Happy Thanksgiving" in November, "Merry Christmas" in December and "Happy New Year" post-Christmas. Much like "Aloha" I'm greeting and sharing with them, what I celebrate. I'm not disrespecting them by assuming they celebrate it too. They are free to greet me or reply to me with "Happy Hanukkah" or "Happy Bodhi Day" or "Happy Boxing Day" to me and I'd feel we'd had a pleasant Holidays exchange.
It is an opportunity to connect and share with others, so I focus on the pleasant exchange vs. the implication of the greeting being used. I'm accustomed to accepting Konichiwa in Japan and from my Mother-in-Law, Bonjour in France, Hola in San Diego and Ciao in Italy. I'm not sure when sharing our cultures and beliefs became an insinuation of disrespect over a simple salutation, but...
Happy Thanksgiving Active Rain and ...Aloha!