I am the LW! It’s interesting, having Alison type out the OOO reply comes across less condescending than how it did in video. I’m sure it works for their office but it also says a lot, potentially, about their culture that she’d need to write something out like that in the first place! Usually “I’m OOO from X to X, please contact X for (reason)” should suffice.
Yes, mine (for external e-mails) typically says somethingalong the lines of “I’m out of the office until [date/time] and messages to this address are not monitored in my absence. I will respond as soon as possible on my return. If your message is urgent, please re-send to my assistant [email address] or telephone [assistant’s number]” Internal it will usually just say “I’m out until [date/time] pass any urgent enquiries to [co-workers] ” although my assistant and a couple of others have my home number and personal e-mail so can get hold of me in a genuine emergency, and I will sometimes speak to them in advance if I’m willing to lower the bar on what amounts to an emergency, but I would not expect any of my employees to do that !

Between now and then, I recommend escaping the summer heat with a delicious Aviation & Tonic. Here’s my recipe:
As with all winter breaks, but especially in a longer break, division and department leaders are responsible for ensuring that external contacts are aware of the closures and as appropriate salaried staff are performing services as necessary to meet the needs of the community during the closure, including checking email/voicemail and responding to time-sensitive matters.