Well, I believe men and women can have platonic friendships. Instead of jumping to negative conclusions, why not consider the possibility that you can enjoy someone of the opposite sex without wanting to be in a romantic/sexual relationship with them? I think men who cannot admit to that are usually harboring misogynistic feelings. They only like/value women who they see as sexual objects to desire. They cannot value a woman on the same level as a male friend otherwise.As for the second part have a hard time thinking that women who have a bunch of FZ orbiters floating around them really only believe that the guys "just want to be friends". Think some of them mostly keep the orbiters around as an ego boost. I don't see anything wrong with it per se, I just think it creates an odd incongruence because usually the orbiters are putting them on pedestals.
Women don't read minds either, which is part of the problem with your "FZ orbiter" ideas. How should a woman know if a guy has honest intentions of friendships or is really just spineless hanger-on hoping for more? If you like someone as a friend, you tend to not assume the worst.
Men and women usually become friends in a group also, so it's often not clear if a guy is singling a woman out if they also communicate outside the group. It's a different situation if a guy comes out of nowhere and expresses interest in getting to know you and repeatedly makes effort to see you alone, and then you feign ignorance of his romantic intentions.