Also, it's what the research says:
Likewise, mens education level is also positively linked to their odds of cheating.
https://ifstudies.org/blog/number-1-in-2018-who-cheats-more-the-demographics-of-infidelity-in-america
When men are thinking with their little head, they generally aren't thinking about the financial ramifications. That happens once they get caught.
I think that the 90% stat regarding college educated females is more reflective of the fact that they are more likely to have independent income with which to support themselves and hire a lawyer than their lesser educated sisters and again, who files first has nothing to do with fault in the no fault divorce world.
Personally, and from my experience, those college educated women are married to much higher income earning men and just see a big pay day relative to the non-college people. I really don't think its cheating causing the divorces. According to this study, the average age of divorce is around 30 and according to your study only around 1 in 8 people have cheated by that age, and significantly fewer than that caught.
I think the 50/50 ratio among non-college grad and a chunk of the 90/10 college grad are caused by 1) money issues by one or both spouses 2) cheating 3) one or both spouses letting themselves go physical. The rest, IMO, is largely about someone, usually women, seeing a big payday.