She, if I recall, had a few comments from people when she got back regarding her words (she was on annual leave on holiday, it wasn’t a family emergency or anything that might excuse the tone). It rubbed quite a few people up the wrong way (most of them parents themselves!). Don’t recall more of an outcome though, I wasn’t at that firm long.
Smugness: it’s almost impossible to dodge in an OOO. London-based poet Rishi Dastidar, whose debut collection Ticker-Tape is billed as a “maximalist take on 21st Century living”, embraces this and lets his inner show-off have free rein by penning poems for his OOOs. “Yes, the tone of these poems is a little self-satisfied – but if you have to tell colleagues you are away, why not try and do it with a little style and pizzaz?” he points out, adding that it’s also one of the few mediums where you’re guaranteed an audience. Here’s how he explained he was away in France:

My trick though is to leave the out of office on for the first day after I return so folks know to expect delays while I get caught up/triage my inbox. Works for my company.
I worked somewhere that required we use them when we left for the day or if we were in meetings all day. It was rather annoying to do every single day. Now I am not at a place that requires it thankfully. I will often put one up if I leave early or if I am arriving late. Also if I am actually out of the office I will also put one up.