The only example I remember was a little less bad, but still pretty bad in my opinion - the artist in question uploaded contra-TOS artwork on his Twitter account, and had a link to his Twitter account from Patreon. However, Patreon's own terms of service state that they look where traffic is coming from to see what kind of things you're funding with the money, and can ban you on that alone:
>Because you are raising funds on Patreon, we may be held accountable for what you do with those funds, so we may also look at what you do with your membership off our platform. As a result when we talk about βOn Patreon,β it means the creations you are funding on and through Patreon. When reviewing a page, we look at how creations are shared, where the page is linked to and where the traffic comes from. No matter what happens, we always give creators the opportunity to appeal a decision by contacting us and sending any relevant information they believe was not considered. We may not change our minds, but we will always listen.
Further, Patreon has communicated to artists that regardless of the age of a fictional character, certain art elements common to anime/manga style drawing (even of adults - "big head, big eyes, short height") may be considered as marking the artwork as a child - and even adding adult-like proportions such as large breasts may not be sufficient to evade Patreon's ban: https://twitter.com/Waero_Re/status/1238408555507539968
Another artist in the thread noted that Patreon decided their content was "violent" because their drawings featured people not smiling during orgasm.
>Because you are raising funds on Patreon, we may be held accountable for what you do with those funds, so we may also look at what you do with your membership off our platform. As a result when we talk about βOn Patreon,β it means the creations you are funding on and through Patreon. When reviewing a page, we look at how creations are shared, where the page is linked to and where the traffic comes from. No matter what happens, we always give creators the opportunity to appeal a decision by contacting us and sending any relevant information they believe was not considered. We may not change our minds, but we will always listen.
From: https://www.patreon.com/en-GB/policy/guidelines
This means that you only need to link to your Patreon, not even link from your Patreon for them to find you objectionabe.
About NSFW creators leaving the platform because of tighter content restrictions on fiction:
https://www.dailydot.com/irl/patreon-hypnosis-porn-ban-sexua...
https://thenextweb.com/news/patreon-continues-to-crack-down-...
Further, Patreon has communicated to artists that regardless of the age of a fictional character, certain art elements common to anime/manga style drawing (even of adults - "big head, big eyes, short height") may be considered as marking the artwork as a child - and even adding adult-like proportions such as large breasts may not be sufficient to evade Patreon's ban: https://twitter.com/Waero_Re/status/1238408555507539968
Another artist in the thread noted that Patreon decided their content was "violent" because their drawings featured people not smiling during orgasm.