He is not working on shit. He copied and pasted you 5-6 year old information. It's amazing how people just believe everything they are told because someone typed words on a screen. That's how he's made over $2 million dollars off this game by doing nothing at all since 2016. He admitted he hasn't worked on the game in 8 years in a comment here:
https://f95zone.to/threads/rack-2-v8-fek.734/post-11360574
The game is done, its abandoned, it's over. It's already so far out of date it would have to be rebuilt from scratch. He knows this, which is why he has abandoned it. The game doesn't even work on newer PC's/GPU hardware anymore. That's how long this has been abandoned (close to 10 years soon)