Recently, adult Pokémon artist  insomniacovrlrd got hit by a DMCA strike on Patreon, by Nintendo of America. He had been doing this adult Pokémon fanfic series called Haven, and it's especially disheartening for him to have to cancel that series altogether in its current form, by removing all Pokémon- and other Nintendo-related works in his Patreon page, to keep his Patreon page in a good standing. More info here: https://www.furaffinity.net/journal/9762007/

It seems that you'll always be in danger of this happening, when much of your art output had been Nintendo's properties such as Pokémon, especially when you're making money out of them via Patreon donations. It's very possible that this is happening because not only because Nintendo were displeased with how their properties got transformed into Rule 34 fantasies -- that's pretty much inevitable, anyway, and most companies turn a blind eye over that -- but it's also possible that it's because Nintendo had just released a game that also happen to be called Haven, for the Nintendo Switch.

After consulting with a couple of friends of mine, just to stay safe, I've decided to also remove all Pokémon-related art from my own Patreon page: https://www.patreon.com/marwangreencritter From this point onwards, I will not be posting any more Pokémon-related art there, as well as all other Nintendo-owned properties. I'd rather be safe than sorry. Such issues like that is one of the reasons why I don't do Rule 34 art of copyrighted properties, because I don't want to get myself into legal trouble because a big gaming company like Nintendo didn't like how we've been using their characters as part of our Rule 34 fantasies.