Earlier quoted context omitted.
Pedantic nit: Those are initialisms. An initialism is when the individual letters are individually pronounced, like "emm-bee-ess." An acronym is when the initial letters are pronounced as a word, e.g. SOAR ("Situation Options Act Review-and-Reassess")
If there's one thing I really dislike about HN culture, it's the consistent derailing of a thread to "um, actually" someone on a semantics distinction that literally nobody has ever been confused by, or to shoehorn in new terminology that doesn't improve communication in any way.
It all depends upon whether people perceive it to be something that "gratifies one's intellectual curiosity," a line right from the guidelines. In your case, the difference between initialisms and acronyms (if any, see another reply) does not, and I accept that. Sorry!