Language is inherently messy, localized, and ephemeral, so it could be unwise to expect that kind of conformity on the global internet. It can be jarring, for example tech folk here in the EU seem to use corporate slang a lot differently than when I was working near SFO or DFW, we're I'd suspect the greater non-homogeneity of native speakers, as compared to the US, had a lot to do with it.

That aside, I think we merely disagree on the colloquial use of FAANG in 2023, as (from my anecdotal perspective) it seems to have semantically shifted into a categorical noun in common vernacular, rather than a once precise acronym from a decade ago, given most of the conglomerates behind the initial spelling have either re-branded, fallen in stock valuation, declined in labor desirability, or whatever else that had originally garnered acclaim and publicity. In that respect, pluralization of such a noun seems mundane, if not a little odd looking for typographical formatting.

• https://programming.dev/comment/1448032

Perhaps this could be coined as another stage of acronymization, or "acronym drift"; the process by which an acronym's original expansion and meaning become less relevant or obscured over time, and the acronym itself is treated and used as a regular word, independent of its original expansion. This can happen when the original meaning of the acronym is no longer relevant, but the acronym continues to be used and recognized based on its familiarity. An example that comes to mind is Google's original acronym for the QUIC protocol, which is no longer used to mean "Quick UDP Internet Connections", as was initially proposed.