it's not like he banned such a large number of patreons, banning a dozen once in a while while you have 13,000 doesn't seem like this Russian roulette to me, it's part of his cult, and even that after BADIK is likely to end
you also describe him as insecure, and insecure people like certainty, Patreon is one, why should he give up a year of people standing there clapping his hands whatever announcement he makes before reading it?
But he isn't giving up on them, he's simply letting them know that they don't hold any power over him. And he even bans youtubers who gave his game a glorified review but critised ONE thing. So free marketing ? No, thank you, not if you taint the one thing that matters.
And what insecure people like even more than security is to become someone, to be admired.
His safest route would be to get Season 3 and 4 out asap, cash in, then work on a full release remaster, afterall the quality for Season 2 was good enough to make millions.
But that's clearly not what drives him, because again he is many things, but not stupid. He knows how to cash in and to maximise his current fame, because as you said, you never know how things change.
Have you ever felt "afraid" that he might quit and stop before BaD is done ? I sure haven't, I don't even think he could if he tried. When he talked about BaD in his Q&A's its "almost" like he is in awe with his own work. Sure he sprinkles the occasional modesty in, because he knows how the game works, but I think his "legend" is all that drives him.
Can't wait until his biographical movie releases...it's gonna be epic
