Then why did you say "its in youtube"?
I don't think that's necessarily true. Grimhelm has always developed without much of any updates while he does so, and the development times have always been long. Granted, I think that the development time for this particular game is more than his others. And he only made a Patreon because people kept saying he should, and that was after this game was already in progress. So why would a dev that did not care about monetary support suddenly speed up development if he sees the amount of supporters halved? And why would he suddenly update us on the development if he has no history of doing that in the first place?
So because there is a possibility of this game being abandoned we should not look at his history when it comes to making games? And if you fear so much that the game would be abandoned, you should be ecstatic that he posts updates on Patreon. You don't want the game to be abandoned, but you do want people to not support the game any longer?
I don't claim to know much about Grim, but he probably doesn't work on the game full-time. In fact, I'm almost 100% sure that's the case.
I agree that I'd love more communication during the development of the game, yes. but at the same time the Patreon is already an improvement in that regard.
And you also have to keep in mind that Patreon is a tip jar, not a store front. You don't go pay someone money there with the expectation to get something in return. That's not what Patreon is meant to be. You pay someone to show your support. You like what they're doing and want them to continue doing it.