I can assure you with full confidence that there's practically no limitation on "disgusting material" that you can sell online, as long as it's legal (which bestiality isn't).

In fact, the farther you push the boundaries, the better chance you will have at making money, assuming there still is an audience for it. There's a platform for almost anything.

Patreon just isn't the place for it and it never was. Patreon isn't even on the radar.

That's not to say you will never run into issues with payment, but your ultimate problem isn't going to be the platforms, it's finding customers.