If he goes back to patreon he would definitely need to change his games, again, if it turns out that the content is actually the problem which most likely it is.
Which means another wasted years of going nowhere with the games, trying to change stuff in order to appeal to patreon.
Also it's hard to say he will make the same amount of money he used to make if he goes back, like i said if he needs to change stuff from the games again then i don't see how many people would still support him again.
The games are already dragged on for too long as they are, going back to patreon means even more drag on, it's his decision what he wants to do but like i said, personally i wouldn't do that.
He can get the financial support he needs on SS too, it would take longer but it is possible, however that depends entirely on him how willing he is to get back the money he lost.