4chan had a sizable userbase way before Reddit picked up at all.
Where do you think these people came from?
I'll answer you.
First SomethingAwful, then Encyclopedia Dramatica and through that Livejournal.
Habbo Hotel probably also brought a few in with the raids of '08.
Just because you have a self-esteem complex about being a newfag doesn't mean you have to deny this site's history.
Literally no one cares if you're a newfag or not as long as you don't act like one, which is why you lurk for half a year or more before posting.