I wouldn't mind taking things at my own pace for 10k+ a month either. You can easily purchase a mansion for half a year of such income in some countries(I say some, but it's quite a few of them,really).
I don't mean to bash the game, it's pretty good. But I definitely saw better, especially in terms of time\effort spent, and for far less value. And I don't blame the dude - he hit the bullseye with his game choice, so he's right to ride the wave. Like a oneshot popstar with a top music single, I guess?
What I really don't get is his fanatical following. Man, Patreon is NOT the platform for stimulating project delivery, that's for sure.