Also I’ve seen plenty of women hit their 30s or 40s and then they want the “sweet guy” they claimed they wanted as a teen

yes, and that perfectly fits with my description of their motives:

once they get older & post-wall, they suddenly become fearful & insecure that they will die alone, therefore they switch from their high-risk bad boy preference to "settling" for their low risk "nice guy with a good paycheck" preference.