Seriously, no sex with the step mom is ridiculous.
Everything has been pointing to that from day one, not to include it because of patreon bullshit is a stupid excuse, if you consider how many devs do their incest patches... oh I mean, how many games get anonymous incest patches.
If he chooses this easier route, despite knowing that a fair share of people (and I would bet that includes a large amount of patrons) expected sex between MC and Stepmom to happen, then that's just screwing those people over.
I'm not one to complain about delays, for whatever reason and no, you can't read up on it on his patreon, he deleted those posts, but I do think that it's worth mentioning that there are many, many devs having the exact same problem with patreon and he is one of the very few who seems to have actually changed his storyline due to it, instead of looking for an "anonymous source" for incest patches.
Very weak sauce.