This is the counter-culture. The dominant culture opposes all of these things and makes obligatory the celebration of the opposite values. 4chan being one of the few lightly-restricted free speech zones allows for culture generation that would be censored anywhere else. Counter-culture is supposed to be edgy, just like jazz and rock were edgy, greasers/rockabilly were edgy, beatniks were edgy, hippies were edgy, disco was edgy, punks were edgy, LGBTQ was edgy, and so on. Every one of them were described by dismissive epithets just like the string you put together about how awful and contrary to decency they were.