This is a complex one. Due to the stigma, porn devolved into a horrible, primitive content made by primitive people, for the primitive people. Our culture is full of non erotic art, then on the opposite side is utterly tasteless, very vulgar porn, and you see almost nothing in between
This situation is pathological, because erotic art should exist and be plentiful in normal society. But the stigma eliminated the good stuff, leaving only the consumers, and producers who don't frankly care about any social norms...