I condemn all content that is not suitable for posting content on Patreon. Only content that is of interest to me as a creator and players will be in the game.
Following their rules because you have to in order to use the platform is one thing but patreon isn't some moral arbiter of justice, they are just following the money. You don't need to carry a flag for them.
Amalia has no relation to the MC so it wouldn't be incest. I am not saying you should make more content for her.
Just my personal opinion but you didn't need to included the scene with Amalia. She is not an interest for the MC and, considering your fear of patreon, why did you bother including a scene that shows "father" having sex in the first place? We don't need to see two people fuck to know they are together.
From a practical standpoint, you essentially wasted rendering time on a scene that doesn't help your game.