I don't think he is lazy or profit-driven like just looking at all the assets that he has created for this game already show me how much he care about the game. One doesn't do all that work if one don't care.
I think he is just I don't know the right word of it... suffering from tunnel vision? I mean to me, the creator suffer from some sort of hyperfocus-related issues. It isn't all bad. I mean his hyperfocus push him to make a game and all those assets that show that he clearly care about this game and work hard on it. However, the same thing that pushed him this far is also the one that is currently blocking him mentally like it clearly get in the way of him expanding the train molestation part which I assume it's because he envision it as purely a molestation-based scenario and thus, he can't do anything more because his brain won't let him do it even if he has all the assets and mechanics ready to expand it to the next level.
So, he came up with new alternative scenario instead where he can reboot his brain and do different stuff. I mean I think that one is apparent with how instead of making the new scenario a continuation of the train part, it's a completely different timeline altogether like he can't mix them up in his head. I think he genuinely want to keep working on this game and improving it, but his brainworm keep getting in the way. I'm not saying that this isn't bad, but I have made peace with the creator's brainworm at this point.