I think that you might be taking "knowledge" too literally. As I read it, the parent's post was using "knowledge" poetically for the various works that AI companies stole.

What about art?

You wrote your house's security code on a Post-It note. Somebody came in as a houseparty guest and located the note, and discretely copied it onto their hand to get access to the house during your next vacation.

Which verb would describe their knowledge of this security code?