However, we have zero tolerance when it comes to the glorification of sexual violence which includes bestiality, rape, and child exploitation (i.e., sexualized depiction of minors). This is true for illustrated, animated, or any other type of creations. Patreon reserves the right to review and remove accounts that may violate this guideline.
We also do not allow other fringe sexual fetish creations, such as incest, necrophilia, or fetish creations that is hard to distinguish from non-consensual sex.
We understand that some topics on this list such as incest or rape are a little bit more complicated because these situations are, unfortunately, part of real life. As a result, when reviewing these types of creations, the Trust and Safety team will take into consideration context including personal, historical or educational narrative. For example, survivor stories or fiction such as Game of Thrones or Lolita are allowed on Patreon.
Patreon's ToS refers to some such stuff as "Abusive" in their Community Guidelines. Posted here for ToS
And here for Guidelines
They expand farther on the sex funding if you're curious on a seperate page
It basically is saying, sure, post it, but keep in mind that we reserve the right to take down without warning any content that has been reported to us as a violation of these Guidelines.
Keep in mind that all of Patreon's definitions of "pornography" refers to content of images depicting real humans. Take a photo of yourself in a sexy underwear? Totally fine. Sexy underwear partially removed or entirely removed and not artistic, and set to arouse someone. Not okay.
In short, they are not a company that will accept the responsibility of being a publisher for material meant to elicit a sexual gratification through visual means of the viewer. 99.9% of the internet hosts and websites are like this, usually because of terms set forth to them by their server hosts, who have these rules pushed on them by the laws where the servers are located.