This isn't the gotcha you think it is. There's a slight difference in using a well established acronym vs. a personally made-up one π

You're essentially getting upset that someone used a word that you aren't familiar with. With that, you're comparing someone using this unfamiliar word to the use of a non-existant word.
When you encounter a word you dont know, you look it up in a dictionary. You don't call out the author on their communication skills (rudely, mind you).
I'm really trying to be cordial here, and I really don't mean to cause upset, but you must see where I'm coming from, no?