Dude, I've asked this in every single comment section of every fucking game that contains (censored) incest, and I'm gonna ask here to you once again, as nicely as possible: if y'all fuck faces don't like it, WHY IN THE FUCK ARE YOU PLAYING?
With that out of the way, leaving to the player how to call the "household" memhers is one of the ways to avoid Patreon's wrath. The other way is simply putting the standard landylady, landlord, roomate, etc. and leaving the rest of the work to the dudes out there who make patches, something much safer for devs.