??? Your comment makes absolutely no sense. There is a one hundred percent chance of a paid version being removed from itch.io but you're concerned about the paid version being on Patreon and not on itch.io?
According to what i see here they only sell updated versions on patreon, and even on subscribe star they do not always sell updated versions as updated as the patreon versions from my own experience, i am just saying they need to sell it in more places itchio or not.
Okay, I guess they do. They... definitely do not use it. Ever. I wasn't even aware of it, and it's not linked anywhere that I know of. Hell, the dev may not even be aware it still exists.