Says who? emo kids who only watch and listen to the most obscure thing they can find (which they ditch as soon as two other people like the same thing)?
Popularity says that a number of people think that something has enough quality to find interesting and amusing. If SA can - consistently over the course of 5 years- produce meme after meme then they are most probably producing quality content.
Don't forget that 4-ch/iichan came from 4chan which came from...? That's right; the anime board on SA.