Above a certain level in my agency managers have to designate an official delegate when they’re out, which can easily result in out of office messages like what you’ve listed. Not the most elegant, but clear and useful!
Did you look at the comments on the TikTok? Because the overwhelming majority love it and are asking if her company is hiring. So it doesn’t seem like most people find it condescending even in video form.

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.
But perhaps we have it all wrong, and are simply enslaving ourselves further to technology by toiling over OOOs that are personality-packed, marketing-friendly perfection. Maybe we need to be altogether more standoffish if we want to make our OOOs really work for us? NYU Professor Meredith Broussard, who’s the author of Artificial Unintelligence: How Computers Misunderstand the World, takes the inspiration for her OOO from US writer, poet and children’s author E.B. White, who once turned down an invitation from President Eisenhower with the words “I must decline, for secret reasons”. Accordingly, Broussard’s OOO reads simply: “I am out of the office, for secret reasons.”