Each time McClure makes an appearance in these out-of-office messages, he “speaks” on behalf of my colleague and alludes to the previous auto-responses in which he starred. It’s a mild form of self-deprecating humor — as if to say, “I know, I’m out of the office again” — made only funnier by the made-up teaser title included in the last line.
I don’t think it’s rude to do the deletion, but it’s pretty rude to not give some sort of Plan B besides “Wait until I decide I am ready to deal with you.” I’m sure it feels lovely to set up if you’ve usually got a lot of annoying people clamoring for your time on matters that aren’t nearly as urgent as they think, but to not even offer a “in case this is urgent, contact X” fig leaf just shows you don’t care.

This is so funny to be because I would chuckle getting those! You have personal context which is how you know that there is an aggeressive/accusatory tone….but without that context I would interpret these as boundaried and light-hearted. (With the exception of the ‘momtears’ one, that would feel overly personal to me.)
What we need in our work communication is not more professional politeness or less formal, chat-based messaging applications like Slack. We need honesty. The problem is that we’ve conditioned ourselves to see honesty as self-indulgent or disrespectful. I’d argue the opposite is true. Honesty, even if it’s a bit more inconvenient for all parties in the moment, pays dividends later. It builds trust. When my partner Anne Helen Petersen and I were interviewing people for our forthcoming book on remote work, a frequent lament from both middle managers and workers was that they didn’t feel like they knew how to succeed in their jobs; that they were guessing what their superiors and coworkers wanted and, even when they asked, they didn’t quite trust the responses they got back.