I did write it, it does use Markov chains, and the whole thing should be self evidently a troll.
For example, it is not necessarily trying to beat you. This was inspired by an experience with https://luduxia.com/whichwayround/ where I found most traffic came from people trying to break it, until one day it hit a mailing list and exploded.
Why not make it a show HN?
I have done other related ones before, and honestly find "Show HN" (understandably) involves a level of expected seriousness that other posts might not. Consequently I prefer to leave that only for things which are more serious in intent.
This one I updated the game a bit, submitted a link, and it went nowhere when I posted it some days ago. I woke to a Linode alert of sustained outgoing traffic and it turns out the post had been resurrected.