Any projects that are breaking patreon ToS and get mass reported will be shut down. And I can tell you it wasn't subscribers who did it. It was people who never pledged and decided to ruin it for everyone else. Using an alternative (like subscribestar or my own site) is fine until the same idiots come back and start mass reporting again. So it's not an option.
Shut down on patreon. I understand that: their site - their rules. But noone take away your game. Just need another way to fund it.
I don't know anything about rules on subscribestar so i can't say anything.
But your own site! Ok people can get together in a crowd and report. Pfff who cares. It's your site - just use another domain.
If you sure that wasn't subscribers than i guess stay with them to fund art for this projects.
For example the game Light Of My Life(that i really love for it's plot). Many people think that girls are ugly. Hah! Moderators even had to set a warning.
I don't know how much patreons you had when all that happens but i think that you can recreate all ideas that you have. Like rebrend for patreon or using another platform. I think previous patreons will find you again by you style. Of course if you still want it.
By the way i've found some rumors when patreon closed their site for many adult-creators that somebody(Was it MrDots?) want to create a platform without such strict rules

. I don't know is that idea still alive or not.