As far as I understand the author, he is working on the second game because he is facing the problem of burnout and working on the second game helps him overcome the crisis.
I find it hard to believe. The excess of blurry images on almost any sex scenes (the harder ones to render are the ones where 2 objects interact closely, aka 2 characters interacting) makes his work on this game pretty minor.
MAYBE, if its true (IF) that the dev have burnout, should be only on the writing aspect, which is hard to believe too, considering the updates are pretty small and the characters interaction are kept on a supercial level.
Considering the amount of devs I saw coming and go over the years here, I would bet a good amount of money that his second game is just an extra venue to make cash, since this game have barely any effort on it with all the blurry stuff on the harder scenes. He's putting some effort on the other game and close to none on this one, so he have a normal workload (I bet all my savings that 99% of this forum have a bigger workload on their respective jobs than the dev have on both games combined).
In the end he's just maximizing gains, since this game fans will support him for no real content, and the fans of the other game will support him for some content. Stonks.