No Patreon.

I don't think they sold that many early access to begin with [only R8 would know the figures ] This 'full release' on Steam is at a reduced cost to just inject some cash into the business so they can get the game onto console, it still needs work, which everybody that is playing it would agree, but what is there in the current build is still at least playable, and there has already been a update to help solve the high CPU / GPU usage some have been suffering.

I'd liken the situation to creating and cooking a complex recipe, you have to create the recipe, then you have to gather all your ingredients, and follow the individual steps to make the separate components, once you have done that you can start putting the dish together, then work on your presentation.
FF is at around 3/4 of the making the separate components stage, what they have is having it seasoning adjusted so it tastes how it needs to