It's not your fault that so many other people have used this framework to perform relationship diagnostics fraud.
Essentiall, the model breaks as soon as either or both parties decide they're not going to use it honestly. And because its implicietly egalitarian, it is more predisposed to intentional abuse than other models.
Every model can be broken. Some are just more fragile than others. This is the "counting calories" of relationship models. Red Pill stuff is the "counting macros" of models.