I found the post you're replying to helpful (and it made me laugh): I've come across the abbreviation POLA many times, with its non-jokey meaning "principle of least authority". I've also come across "principle of least astonishment" (Larry Wall or some other Perl contributor maybe?) but I'd never noticed that was (presumably?) a jokey reference to principle of least authority - I guess because I came across the joke first back was I was barely a programmer and I've never seen it abbreviated.
But maybe it never was a reference to POLA proper - "principle of least privilege" is more widespread I think, outside of the object capability community. And maybe "least astonishment" came first!