That's fictional evidence-- that is, not evidence at all.

The person who wrote that was pointing to the fiction to give a point of common reference for his observation of the dynamics between men and women, not using the movie as his evidence.

The author's observation (and mine) was that women tend to lose respect (and thus attraction) for a man who they can talk into delaying or abandoning things the man says are important to him. The movie version is just that idea writ large.