You are completely right.
The thing is: The cheating path is very well established in the Chapter 9: She cheats with a lot of guys and the scenes are absolutely hot. By the way, Mircom really does updates, not just little teasers as is common in other games. However, the cheating occurs even if you choose the cuckold path which, as Claudio explained, is about the MC knowing and planning things togheder. Moreover, even if you choose the cheating path, most of the cheating does not happen unless you go to the swingers´s, decides not to stay and go home. I didnt understand why this action would lead Anne to became a cheating slut and the more obvious choice of cheating porn does not have this effect. In fact, I could only unlock those scenes thanks to the friends in the forum who exploited every possible scenario hahaha
There is also an absolutely amazing cuckold path in Chapter 9: The clean up scene + the confession about the spa with Derik. It is however a lot smaller than the Cheating Path. And you dont get those scenes even if you choose Threesome + Cuck Path in the Bathroom with father. In fact, you cant let father fuck Anne in order for the most hot Cuckold episodes to appear in Chapter 9. Again, you get those depending on the choices you make with the swingers couple, which is a option that most cuckold fans could very well not take, and is a obvious choice only for a possible swinger path.