I say "H. N." in my head whenever I see Hacker News as an acronym.
My question is, when you have an acronym that you tend to say the individual letters of, do you change the a/an? For example, this example would be "an aech en inspired ...", where if you read the acronym as "Hacker News", it would be "a Hacker News inspired...".
Another common example is FBI.
It always irks me when I see "a FBI agent", but I'm not sure which is actually correct.
https://en.wikipedia.org/wiki/Article_(grammar)#Indefinite_a...
https://www.chicagomanualofstyle.org/qanda/data/faq/topics/A...
Of course there will be variants where you'd just have to make a decision (e.g. how do you pronounce SQL?)
One note: technically, 'HN' is an initialism; acronyms are special cases of initialisms that are pronounceable.
It depends on the sound the acronym, or initialism, starts with. So "an FBI" because you say "EFF-BEE-EYE" vs. "a CIA agent".