The above automated messages do not sound assuring as the time is not specified in terms of hours, days, or week. Here is a good example that businesses can follow to deliver effective customer service communication.
Found it! (Reddit’s own search functionality is garbage, but it’s so easy to google for reddit posts, thankfully)

Labor Day Wallpapers – Wallpaper Cave. Festive out of office holiday messages provide you with a creative approach to tailor your automated email message to a specific holiday. Out of office message examples. More general requests can be emailed to. If your message is time sensitive, use urgent in your subject line so i know to reply by the end of the business day.
About the “overshares”: You linked to a previous column that mentioned this point, “Sometimes the over-sharing of plans can even come across as suspect — similar to how when someone’s calling in sick with genuine illness, they usually just say, ‘I’m going to be out sick,’ but fakers will generally give you a long list of overly specific symptoms, like they feel they have to convince you.”