Plonker.....☺......I wouldn't want to be on a plane with someone as volatile as this idiot......especially as I am wont to sing jolly Christmas songs when flying.....x
Anybody says "Happy Holidays" to me in anything other than an obviously 'ironic' manner is going to get some mild earache.
Regardless of whether you are Christian or not (I'm not), the festival is Christmas and the appropriate greeting is "Merry/Happy Christmas" - not some mealy mouthed 'offend no-one' neologism.
But I'm polite and happy, so won't be getting tossed off anything/anywhere anytime soon ...