Other female animals like fish and birds have showed a preference for males who seem to be popular with other females (depending on species and conditions),
human females are no exception. We call it preselection in the manosphere, but in biology there is actually a name for it: mate choice copying. That doesn't just explain why a player or at least the fantasy of the man being one is so attractive, but also why they are more attracted to taken men than single men.
Their dream that this very good looking man who is popular with women, and has become smooth and confident because women validate him, is going to be "changed" by her or is going to choose her, makes sense in one way because obviously he is the most attractive man so they want him. But in another sense it's very strange. If a man dreamed that the well-off swimsuit model who is surrounded by models and high status men would be "changed" by him or choose him because of how special he is, he would be assumed to be mentally ill.