You're not supposed to say 'comics.' It's graphic novels.
I blame Batman (for loads of things actually), that uber-earnest fighter of Gotham crime. Come on people, he's dressed as a bat. You know happens if you wander around an estate in Peckham dressed as a bondage pipistrelle? The local criminals don't hide, they put it on Youtube or FB Live for laughs. Then an ambulance comes and takes you to the Maudsley for 'assessment'. After the locals have nicked your phone.
And the Joker, surely the most annoying villain ever. It's America, why doesn't someone just shoot him (lndiana Jones had this right). He has no special skills other than being annoying. Look at me, I'm crazyeeeeeee! The character is walking talking version of the 'you don't have to mad to work here' poster. That's not a good thing.
Deadpool took the mick of a genre that increasingly likes to look up its own fundament. With a serious frown. What's my motivation? Erm, I dunno, but that costume doesn't look comfy. Must ride awfully.
Suicide Squad was always going to come aground on trying to take a bunch of by definition unlikeable people and make them appeal to a popcorn munching audience. They seemed to do with tattooes. I dunno, I seem more tattoos these days at the swimming pool, so I'm not sure they're as edgy as Hollywood thinks.