Much more impressive than the computeres that learned to recognize cats on YouTube, thereby passing the "Purring Test."
So it's just employing the same rock-paper-scissors strategy that Spaceboy 2.0 employs: wait until the opponent throws something before committing to anything other than a formless finger-blob. If you're not playing rochambeau with imperfect information, you're not playing rochambeau.
Yeah, this is the very definition of cheating at RPS.
To be fair, if it flagged every YouTube video as containing cats, wouldn't that be accurate for a huge portion of YouTube videos?