If I’d seen it mentioned I would just literally have assumed it was a reference to people making music on PC that sounded like Ad-Lib soundcards for the, “ooh, old computer games nostalgia” types.
I actually only know it’s a thing because (I think) @guntrip referenced it the other week on the terrible album art thread due to one of the entries formerly being on the label. I have still never knowingly heard anything by them but I’m about to check the YouTubes up thread.