>>75449891Containment has never existed once retard
You gonna cry everytime you see a rickroll?
or the millions of edits of the trollface?
pepe and all the dumbass sigma edits?
Ryan gosling memes?
Hell, most big movie memes in general?
All the countless greentexts that to this day still go viral?
How about virtually all of modern western anime culture? Since most of it is directly based off 2000's /a/ culture.
4chan is a popular social media site that has many influences on pop culture, same as everywhere else. Only newfags try to push that this is some secluded bunker.