My OOO auto reply is fairly detailed. I have links to information for products I work with, an alternate point of contact for people to approach, etc. It’s really a CYA thing. What irks me about some OOO auto replies is when the person who is out has an alternate point of contact who is also out. Both are obvious planned absences, and both people are on the same team. Don’t they talk to one another about vacation??
Giving the option to contact an email address containing “interruptyourvacation” provides two things — 1) A dose of humor, and 2) discouragement from actually doing what the name suggests. Plus, he prefaces it with a request for empathy, by explaining that he promised quality time to his family.

But let’s talk out-of-office messages: overshares, excessive detail, the ones that self-aggrandize (I once had a coworker whose auto-replies often said he’d be in late because he “pulled an all-nighter” on various work projects, etc.), the ones that never get turned off, people who don’t use them at all, and other pet peeves.
I hate when senders ignore the instructions in my OOO message. Usually, my message is something simple like: “I am out [Dates], returning to the office [Date]. Please contact Jane (jane’s email address) in my absence. General [department] questions may be sent to [general dept email address].” To me that says if you are sending me anything then I won’t see it until I return. If you have something you need to be resolved right away, you can contact Jane or send it to our department inbox (where it should be going anyway).