Jack Kirby will scare the hell out of you
Of the three Fourth World titles, the Forever People was probably the least of them... basically a reworking of the Golden Guardian concept with space hippies replacing the Newsboy Legion. Still, Jack Kirby is like pizza. Even when there's space hippies, it's still pretty awesome. And one issue of the Forever People easily out-fucked-up anything the Saw franchise tiredness has ever come up with.
I know the idea is unworkable, as people screaming for help don't really look anything like people laughing with joy, but I think it's so messed up that that can be excused. Still, next time maybe a Halloween-themed haunted house or something?
So it's all basically one big excuse for sadism as Darkseid looks for the Anti-Life Equation on Earth, because when you're the dark emperor of the universe, why not have a little fun with it and indulge your minions' creativity?
Does Darkseid calling that guy "Grandpa" remind anyone else of the Kurgan calling someone "Mom"?