The following panels are from the story "New World Order," the first story arc in Grant Morrison, Howard Porter and John Dell's JLA run, and they were first published in 1997: Two members of The Hyperclan, a group of alien superheroes who have come to earth and effectively replaced the Justice League, suddenly, violently turn on Green Lantern Kyle Rayner, who muses about how much comic book superheroes have changed over the years. Instead of just robbing banks and suchlike, they threaten to cripple you and attack your loved ones (In his first adventure as Green Lantern, Rayner's girlfriend was brutally murdered by a supervillain, who then stuffed her corpse into their refrigerator, giving birth to the term "women in refrigerators").
Rayner's Morrison-penned observation about how cruel and evil supervillains were getting appeared in a couple of comic books from 15 years ago.
This year, in an issue of Justice League, a series that replaced the series that replaced JLA, its current writer Geoff Johns wrote the following scene, in which a villain tortures Steve Trevor and threatens to murder his family if he doesn't tell him how to break into the Justice League's headquarters:
That same month, the same writer wrote this scene, in which the villain Black Manta threatens to kill a heroine's family, after he finishes murdering her:
I suppose one could say that nothing's changed much in 15 years, but that wouldn't really be true. Fifteen years ago the Justice League writer was commenting on the trend in a dismissive fashion, essentially ridiculing the writers of the time, whereas today the Justice League writer is writing his super-comics in the same fashion that Morrison felt compelled to comment negatively on back then.
Super-comics aren't standing still, they're devolving.