There's a huge difference, between Incest Intended, and incest forced/fanmade. Some games literally deny it, or have a story that refutes it. The difference being, is a [TAG]. See the tag above? That's cuz PyschoDelusional™ intended it, but must be coy and deny it, wink wink. See the difference? Making a fan-made patch, where the DEV is like "this don't even make sense" is also unofficial, but also not canon. Only the Dev can decide what is actually Canon, so someone in confidence, with authority to tag, has confirmed this.