While you shouldn’t use a vacation message like the first example in this article, it doesn’t mean you can’t have a little bit of fun with your emails.
Ha – I didn’t watch the video but still definitely get the condescension! It’s a LOT of extra explaining and direction when something like, “if you need immediate assistance, please contact Fergus at…” will do. In my opinion, cutesy stuff like this is mildly entertaining at the beginning but gets dumb/annoying shortly thereafter. Not just with OOO messages, but other instances where companies try to make being “cool/funny/laid back” parts of their brand in really obvious ways.

Setting your out of office may be different depending on the email provider you use. But whether you’re on Outlook, Gmail, or another platform, it should be a relatively straightforward process.
My project is entirely phone based and we don’t have voicemail, either for the project line or individual staff lines. We used to, but we found we spent so much time returning voicemails and getting people’s voicemails that it led to us missing calls and going in an infinite loop.