It is true that sometime the only reason I play an update is because I do the incest patch (trying to do a fast "go through" to see what I need to change, and check rapidly I did not break something), and if I did not do the patch I would probably skip some update from time to time (yes, I do that even for games I "patreon") to use the time for something else.I imagine it won't be easy to keep updating this patch. If I may make a suggestion: I think you should wait for the game to complete before you can create a definitive incest patch.
But I could not in the past, and cannot now, do it in the way you suggest, for at least two reasons:
1) I had started to do it for myself after Patreon forced Zorlun to eliminate it from the story, originally it was not meant for release, but there was a quantity of people who pressured Zorlun, some even aggressively, so, I started releasing it ("historical" reason);
2) It is not always easy, or anyway ends up being a bit sloppy, because I have other stuff to do for myself and others and not enough time and energy (I am lazy ) even for all of that, but if I waited till the end of the game, I would never do it, because it would require too much of a big "one shot" investment of time and energy - I have to go through the code manually, it is not a simple "automatic search and replace".
Going through an update a time is one thing, going through the whole six (4 for now, but I think a couple more will come) chapters from scratch, no way .