Since people seem to be struggling with Chaos now that the choices only appear if you already have Chaos points, maybe there could be a special marker on the very first one available? I believe that is when you first meet Autumn. Maybe just an asterisk or something or a tutorial message when you first click it that explains that certain darker choices will lead you down a darker path and if you don't take them now you won't see them later.
I think part of the problem might also be that I believe the Autumn Chaos starter is behind the first Love choice, when 99% of Chaos is tied to playing Corruption to start. So people trying to do Chaos are choosing Autumn's Corruption option to start, missing those first Chaos points, and then not having enough for the later, more obvious Chaos choices. Rearranging the events here might help people be less confused and feeling like they have to use the guide.