Yes, some (not a lot) of Korean guys / Asian guys in general have their ears pierced. :)
I don't see why people think this is "gay", Asian culture and Western culture are really different - they perceive certain styles differently. People are exposed to different styles in day-to-day life, and so when they see something that's "different" - for example, hair styles, clothing, piercings and the way they act.. they'd see it as "weird". When actually, it's quite normal in that country.
I don't see why some western people ridicule Korean / Asian style and see it as "girly" - just accept it for the way it is, that we all have our own style, we all look different - and thus, we all dress and act differently.
I'm sick of how people think piercings are only for girls, who cares if a guy has their ears pierced? Let them do what they want, it's their body, it's their image... if you think it's "gay" or "girly" then don't do it to yourself, problem solved. Ridiculing others wouldn't make less "gay" or more "manly", and it doesn't make you look any better.