??? What's up with native English speakers and random acronyms of stuff that isn't said that often? YMMV, IIUC, IANAL, YSK... Just say it and save everyone else a google search.
I'm not a native English speaker, but IIUC is clearly 'If I Understand Correctly'. If you look at the context it's often fairly easy to figure out what an initialism means. I mean even I can usually deduce the meaning and I'm barely intelligent enough to qualify as 'sentient'.
I'm bemoaning the fact that I have to google random acronyms every time an American wants to say the most basic shit as if everyone on the internet knows their slang and weird four letter abbreviations
And googling those acronyms usually returns unrelated shit unless you go specifically to urban dictionary
And then it's "If I understand correctly". Oh. Of course. He couldn't be arsed to type that