When we have people go on maternity leave we normally arrange with them for mail to be forwarded directly to the person covering their leave, (but I’m in the UK so normally they will be out for 6-12 months)
Out of office messages can also make your workload easier when you return to the office. Colleagues and clients who know you are on vacation or at a conference might be less likely to fill your inbox with messages. If someone does need immediate help on a project, they can know who to contact in your absence to make sure it gets handled on time.

So, for whatever reason you’re out of the office, your email inbox should be informative with any information about office closures or unexpected absences: Include an expected return date and time. Offer alternative point of contact and their details. Add the general office contact number and email address if you don’t have a specific point of contact. Be friendly and warm in your tone, even if you choose to keep it simple.
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.”