When an internet denizen makes a long post but uses acronyms that are niche and obscure.

[u/SolarVampire]

People who write a short story out in full spelling and normal grammar and punctuation suddenly throw out seemingly random, due to obscurity, acronyms that are almost fishing for replies like "what does that stand for?". If I don't know what you're talking about your story immediately loses all traction, I lose any sympathy I had, and I can't continue for the sole reason that I can't understand the context anymore. This is excusable, for so many reasons, but at the same time it's just pedantic as fuck. Maybe that's not the right word, but it sure feels like the right word.

There is no reason why writing "WFH" instead of "work from home" saved you any reasonable amount of time in the grand scheme of your total time spent on what you were trying to communicate. It makes you look like a dweeb.