It's weird how people get upset about what someone's earning on patreon, like making $22k means you have to dedicate your full time to your game.
The way I see it patreon is more of a subscription service. You're putting down money to get whatever the developer is offering, not some kind of pact that the game is going to be finished, it's fundamentally not designed that way.
Call it a grift if you want but it's a damn good grift. I don't see any reason to be upset about it. Evidently the patrons are happy to keep paying even if it's only 11 minutes every month.