"[citation needed] on 4chan producing memes that are more than comics and cat pictures."
"The millions of 4chan users have produced _maybe_ as much influence as a single pop music star"
You answered your own question.
"The millions of 4chan users have produced _maybe_ as much influence as a single pop music star"
You answered your own question.
My point is that he is vastly overstating its influence. The millions of 4chan users have produced _maybe_ as much influence as a single pop music star.