I know man, that's just Patreon for ya.
A simple VN like this would've been done within a year at most if it was being made by someone with direction and a team, or some kind of overhead. This isn't a corporation, it's not even an indie team, it's just some dude on Patreon doing it and milking it because they can get away with it, plain and simple.
That's how it is now, and I love the game for what it is so far but if it's on Patreon it's gonna take 10 years to a mediocre release or be outright abandoned at some point. This is why I've only ever supported 1 Patreon person and it's the artist CuteSexyRobutts because they just draw and it's amazing art.