Erm, it's about as monetised as porno games can pretty much get. What else could he do to monetise it further? Microtransactions? He's getting paid monthly (quite well too) to work on a porn game. Most other porno makers only get paid after they produced something -- including game makers who prior to Patreon pretty much only got paid after they released their complete game which was often on shady websites unless you were Japanese and had access to dlsite or something.Given that he's one of the top creators on Patreon for half a decade and given that he creates on one of the most known NSFW games on the whole planet, it's actually astonishing how little he monetizes the whole project - at least compared to other people in this streamer-/socialmedia-/influencer-sphere and especially compared to other games in this mobile market.
Like I struggle to think how a porno can make any more than this. You ain't getting adspace on this kinda shit. The only creators I'd reckon that'd make more are people with cults of personality like BelleDelphine.
Heck, I'm willing to bet even most big-shot porn actresses get less moolah than DC and they have to live with the fact that they functionally ruin their personal lives in the process.