An SJW citing Alan Moore about anything is a fucking joke. Still, it shows a distinction between actual subversion of audience expectations and just putting out a shit product. Moore wrote about comics while writing a comic, which itself included a comic discussing the work it was contained in (Tales of the Black Freighter). Despite that, the message was fairly simple. What would someone who dressed up in tights and went out to fight crime actually be like if they existed in reality? The answer is fairly simple: a psycho.
Another reason he's pretty much diametrically opposed to what an SJW is (and ardently despises liberalism and especially American liberalism from a mostly anarchist perspective) is he was capable of portraying a character whose politics and opinions he hated, but do so in a sympathetic way. Specifically Rorschach, a psychotic vigilante near-fascist, the only character in the whole thing who never compromised his morals and would die for the truth, that is to say, an actual hero. Of course, he would also rather let the world be destroyed than save it with a lie. He was clearly insane.
But portraying a right wing fascist as actually being a human being would be pretty much unacceptable to nu-capeshit.