Best way would be to disable the Community tab and the Comments under his posts. Maybe for all devs handling such themes like incest, beast, etc.. Discussions and comments should be handled over a Discord server.
And, hopefully, the dev plans in advance und reworks the game, removing the blood relationships and make it easy to implement an incest patch. So homepage and game are by default vanilla. Better be prepared!
So he wins time, because, imho, the next step by patreon will be, removing material containing incest, beast, even if it's not obviously promoted on the homepage. And the final step will be to remove all adult material (of course forced by payment processors like paypal).
Better be prepared (maybe with an alternative fallback homepage) than looking stupid when the hammer comes hard.