The Calls/SMS Auto Reply app for Android comes loaded with auto-responses for out-of-office messages. You can select any of the simple messages to send as a reply to incoming calls and text messages when you are not in the office or away for a holiday. You can edit these existing messages or add your own custom message to set up auto-response during your absence.
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.

Are you the office prankster? Are you also taking some time off to relax during lockdown? Everyone loves a cheeky out of office response. We’re big fans of the example below. You’ll have your whole office in hysterics.
My OOO is almost always “I’m out of the office and will be returning on x date.” My email sig has instructions along the lines of “for questions on x, email this list” for a couple of the more common areas people would contact me about that might need an urgent reply (as the lists go to more than just me, obviously), but most people have finally figured out to contact those lists to start with, anyway. If I were in the middle of a project or something that needed to be moved along in my absence, the project teams usually know when we’re out, but I’d put a back up in that case, if needed, but generally there’s not much to be gained by a longer OOO from me.