I haven't followed this project long enough to say how good the updates are. I spoke in general with what I noticed since patreon arrived.Then don't pay those guys, but it has not been my experience that the ones I support behave like that. Grims updates are regular and meaningful, the fact that $5 contributors get a girl and a gun hasn't seemed to have impeded his progress. I don't see why anyone would logically come to the conclusion that it would, but your mileage may vary.
The reason I don't support this game is locking content behind a paywall. I don't support any games that do this.