That only flies in an email or on a specialized forum.
It's curious that you are smart enough to come up with an arguement yet apparently at the same time innocently simple enough not to know why it's invalid.
Counterpoint: It doesn't.
They made a reply to a military member on a thread about military equipment. Googling a few acronyms + "military" would surely lead one to the answer.
I'm reminded of an acronym at work: CIM. They come in two variants, CIM-A and CIM-B. I'd been there a year before I finally decided I needed to ask a more senior colleague what they stood for, and he didn't know either. The intention was obvious from the context of their use (although whether -A or -B was more serious wasn't) but most of the people in the weekly meetings discussing Critical Incident Management didn't actually know that was what they were discussing. Nowadays we have a culture that better encourages definition of terms upon first use, and it's less common that someone needs to ask "stupid" questions.