The main character from 'There Will be Blood" was a sociopath...
Anyway, individuals with a problem toward eyeliner on men are simply, blindly, following the implicit and explicit forms of archaic conditioning that say what a gender should be. The thing is, we're no longer in a situation where men have to be really 'masculine' to survive; we don't have to be aggressors or protectors, and therefore revolve ourselves entirely around activities which deny sensitivity or 'feminine' quality, because all of our basic needs have been met. This actually means we can begin to cultivate our own approaches to living aside from those imperative roles that used to exist. That can include an interest in appearance although it can mean a multitude of other things that weren't previously persmissable. For myself, it means the chance to understand things like the nature of love, compassion and so on that didn't really have a place in a hunter/defender/provider's repitoire.
Ultimately it's a good thing that people feel able to break the previous and now unnecessary moulds of behaviour.