>>94523048People have been appropriating 4chan's cultural memes for years: Pedobear, rickrolling, Anonymous, Pepe, Rage comics, creepypasta, RRRREEEeeeeeeeeee, advice animals; biggest of all was lolcats, which arose from /b/'s Caturday posts (which we originally stole from the Something Awful forums).
We just don't endlessly whine about it like other cultures do.