Also, you need to know your audience if you are going to go eccentric. Alison mentions that this message is fine in their culture, but it wouldn’t npbe appropriate for my somewhat formal field. And even if your workplace in general is casual, you might be contacted by someone outside. (In a tiny provincial courthouse I served in the past, there is a story going around that in the 80s a junior but elderly clerk used to address phone callers as hun and sweetheart and generally speak very informally. Most people thought it was funny, and then the President of Supreme Court called and… he didn’t).
Out of office messages are important because they let people know you are away from your regular work duties. These messages help businesses and projects run smoothly when a member of their team is away. They let people know you received their message and will respond by a certain date. This helps prevent confusion and frustration if someone is trying to communicate with you by email but not getting an answer.

Holiday messages are short phrases, where people wish happiness, joy and cheer to others. At certain times of year like Christmas and Thanksgiving, employers and employees send these messages to let recipients know they care. Depending on the recipient, your holiday message may be more formal or casual in tone.
That’s what always got me! There always seemed to be an air of preemptive defensiveness? I’m definitely reading a lot into it based on other ways this person showed up in the workplace and how they treated others. Also I completely agree that some things are more important than work (!), but there was something about the way these were phrased that made me feel like ……… okay?? I know??? It just felt … performative.