Abbreviations and acronyms are highly inefficient if not defined clearly and up front. It also creates a division between those who know and those who don't.
I absolutely detested seeing "ISO" suddenly everywhere on Facebook and Nextdoor in place of "in search of". If you didn't know that before, you know it now, but you may also be annoyed by it not being about the international organization for standardization, which also goes by ISO, but not for any reason people would magically guess, without a background in Greek. (ISO explains that, since the acronym would differ in every language, ISO is actually derived from isos, which means "equal". Happy coincidence that it almost matches the name of the organization, but could also become obscure with time and lost history.)
For our company, I've been very clear that we don't make up acronyms unless a layperson could reasonably guess what it stands for, and also not confuse it for something else.