If a young woman in middle school or high school hangs up a poster of Barack Obama in her room, this is seen as acceptable. It’s fine for women to admire men and want to be like them.
If a young man (the same age) hangs up a poster of Hillary Clinton in his room, this is seen as odd (maybe even troubling, is he gay? Oh no!).
Society tells us young men can’t think of women as role models, unless they’re a family member, whereas young women can admire and seek to emulate anyone, regardless of gender.
If you’re a young man, and if you have a poster on your wall with a woman, she had better be half-naked in a bikini, even if the Ronald Reagan or Gen. Patton poster next to it obviously features the man fully-clothed.
Young men are not to taught to think of women as role models. They are taught to think of them as either family members or sexual objects. There is no other category presented.