>>938314939 (OP)
Because many women think that being strong and confident, entails acting like condescending assholes, reacting to everything in bad faith and demanding everything from a relationship while expecting to provide nothing in return.
Strong and confident is what authoritarian bossbabes with sexist views on men call themselves.
So unless you're referring to actually strong and confident women, which guys tend to like them because they don't have a chip on their shoulder about men and know that being in a relationship with someone entails both parties putting in the effort to make it work, that is why men avoid "strong confident women".