@pettter What decently sized community which has lived for more than a decade doesn't have an important role to some degree? There are a lot of things in "internet culture" that have come from there, or been popularized by it. A bunch of bad stuff as well, but that's the internet, I suppose.
@pettter Well, 4chan arguably was created because of SA, moot was an active user and would promote it on there, and the oddball humor on Twitter from dril for example also picked up speed on there - many prominent accounts claim to have started on a subforum there from what I can find. Slenderman also comes from SA.
Whether something originated from SA or not is somewhat irrelevant though, what matters more is what it cultivated and grew, that otherwise would've just been forgotten