Patreon is a website where artists can publish their work and sell subscriptions to them.

They never had any explicit policy on feedism, but on March 12th, 2024 they updated their community guidelines. It contains the following:

Promoting, normalizing, providing instructional advice about, coordinating, or otherwise glorifying disordered eating, feederism, or related topics is prohibited on Patreon.

Examples of disordered eating works include, but are not limited to: extreme low-calorie diets, imagery of someone making themselves vomit, and imagery focused on ribs, thigh gaps, concave stomachs, and so forth.

Examples of feederism works include, but are not limited to: force feeding (consensual or nonconsensual), using illegal or controlled substances to achieve weight gain, using devices to fill the stomach, and so forth.

Works involving disordered eating, feederism, and related topics that have a community support or educational focus, are part of a greater narrative, or are otherwise contextualized in a manner that abides by Patreon’s guidelines are permitted. Also permitted are works that promote body positivity, eating competitions, medical surgeries, and health, fitness, or lifestyle works.

In practice, this means that feedism is banned from their site. There are some alternatives, mostly targeted at the 'fatfur' community.

isn't there somebody you forgot to ask?