There was a post a few back alleging that Patreon had done this to other developers on the basis of a mod uploaded here. While I can completely get behind Patreon not wanting certain content on their site or not wanting to provide a service to certain content... they should not be policing other sites or preventing/dissuading devs from putting up content elsewhere, that would be otherwise inaccessible to users.
The only time I have heard that being a problem, is when they link to it directly there. If you link to here, a pirate site with content that they either do not approve of, or even possibly illegal in some cases, then yes, they won't be happy with you. That is a given. You can put whatever you want here, just don't link to it on the their site, don't talk about it there, etc.