Patreon is shit and what not but this game has been on development for what 6+ years? I mean...
People should understand one thing - projects like this are not supposed to be finished. This is a perpetual source of income for this guys - they will not finish this because:
1. this will ment that monthly subscriptions will end,
2. hype for the product will diminish in time so in a two or thee years, they will be lucky to sell a few copies on stem yearly - not going to happen with regular - if small - updates.
This guys are a bit to smart to finish this - the fact that this is years in the making means only one thing - they are milking whales for the whole time.
The only way this project is going to finish, and I'm explaining this not for the first time on this topic, is for either devs die of old age or people finally will lose interest - with in both cases is probably not going to happen soon.