@DarkSilver - You defined the relationships in the Assemby-csharp file, right? Revise it to Max moving in with a homeowner named Ann who bought a house with her 2 daughters.
Take the original definitions and host them off-site like lewdpatcher with NO links to patreon and no discussion of it. Remember the patch or incest content CANNOT be linked to Patreon in any way. If you linked to your blog on Patreon and you have an incest game on that blog, they will ask you to either remove the link to the blog or take down the incest content itself.
Regarding the words "son", "sister", "mom", and Aunt. You could ask the team to quickly use a search like CTRL+F to sub those terms for something like "Hey little brat!" instead of "hey little brother!". That way you only change it once.
I know this will delay a game somewhat but that would stop the trust and safety person from going too far.
If seems too harsh, then I have another suggestion.. Do the above 3 in the quickest way possible to get rid of "incest" being mentioned in the game. Next, tell your Trust and Safety "handler" to give you their boss's contact info so you can ask them if they are willing to risk losing several thousand per month for being "overzealous" in their enforcement. Point out that you earn them several thousand per month and if someone is going to harass you, you can take your several thousand dollars elsewhere.