Right now his Patreon members are solid and slowly rising. If the game would stop or place on hold, it would most likely be due to stress. He has way too much on his plate to handle all these tasks right now so this is causing him to be unorganized. He needs to do something to help his workload towards the game. Whether it's trimming the fat or pruning certain support characters in the game, finding someone to help manage his Patreon and answer email/comments, or finding someone who can help with the development process like coding or help with Art editing. This would definitely ease the burden on his shoulders.
But if he can't do that because his level of expectation is high for help, then he may want to cut out somethings like email communications and only communicate through a post on his Patreon and don't respond to any comments or keep the comments belief. Also, he should stop responding to things he doesn't like. You're not going to appease everyone, so choose your battles.