Because there are many kinds of evil for /co/ content creators.
You either are evil in the literal sense:>John Kricfalusi
Groomed little girls who were his fans>Chris Savino
Sexual Harassment of his female co-workers>John Lasseter
Sexual Harassment of his female co-workers>Julia Vickerman
Sexual Harassment of male minors>Warren Ellis
Used his power position in comic industry from grooming girls who were his fans
Then there are evil /co/ content creators not in the literal sense of evil but in a sense of making horrible decisions and concepts that ruin decades of comic book history and the works of the previous people that and made shitty decisions like creating offensive stories for some people>Mark Millar
Destroyed the story of the Authority of the Wildstorm universe by making them edgy assholes without the concepts of "heroes who gets shit done" that Warren Ellis did.
Made Captain America in the Ultimate universe a racist and xenophobic asshole that's against everything he was created for in the 40's.
Wrote stories about rape just because of edgy.>Frank Miller
Acclaimed Batman creator he also made a Batman's expies comic in which the Non-Batman kills muslims in Middle East.
(I don't consider Batman and Robin evil as he just said it was a parody).>Garth Ennis
Created many stories in which there is a nazi who isn't actually a real nazi but a good nazi that wants to defend his country
Hated many superheroes characters and often humiliated them by using his self inserts that were either Punisher or Hit-Man>John Byrne
Re-created characters for his own fetishes like age gap romances between female minors and male adults