Because Pepe has a long history that existed before this board.
That's because you are not as well informed as you've been told you are, quite frankly. Most people here are not anon. They are from facebook and twitter. They know nothing about anon or our history.
If you don't know the history of Pepe it doesn't matter that you came here from 4chan. You are not one of us and many fakes here are like you, pretending to belong to something you know nothing about. No offense but it was stupid a year ago and it's stupider now. Anon do not like the new people. If you think I'm kidding watch what happens when this really goes mainstream and the rest of the channels show up. You are probably going to hate it. We have different values than you do.