Sure, Kopelman is truthful about the fact that he’s on vacation, but he also lets the recipient know that he or she would be interrupting important family time if the first option is chosen. It states a point simply and uses humor to avoid making it sound like he wants the reader to feel guilty.
Dear [Customer name] Our store will be closed from [date] to [date] for Thanksgiving. We are assure you all of your emails will be answered once we are back on [date]. Kind regards, [Name/signature]

Thanks for explaining, that makes sense. To me, it seemed like a well-communicated coverage plan and I would have especially appreciated the setting of expectations on how soon I could expect a response so never would have even considered that to be condescending.
“The world is serious enough as it is - people need, and usually appreciate, an unexpected moment of levity in their day,” he says, when quizzed about how recipients might respond to such an OOO. He also confides that he himself has dispensed with auto responses altogether – though not for idealistic reasons. “The last time I tried to set one up, I botched it so badly that somehow it resent every single email in my outbox from the previous year - client emails, firing notices, literally thousands of emails.”