To be frank I didn't give this story 1 star just because it was too edgy or anything, the story is just extremely stale, and even the torture shit can only get you so far.
The plot threads were handled with all the grace of a hippo on meth. There is one plot cycle, which, as far as I've read, does not change. The psycho and the dumbass meet a new enemy/challenge, psycho pulls some vile bullshit and is showered with success at the expense of dumbass or some of the other poor sods who were psycho's allies.
Note how I didn't even attempt to use their names and you already know who I'm talking about. These characters are as one-note as they come, and the story at its core does not change, it just comes down to who's filling what role. It's stale, lame, and frankly boring, and not even the truly disturbing depiction of the main pair's relationship can salvage it, because in a world with psycho gods, the all too realistic abuse and torment that psycho inflicts on dumbass just doesn't sit quite right.
In general, the manga attempts to juggle a lot of different topics. In practice, the manga sorta smushes them together into a mess.
It's not that there's not asome good ideas in there, it's just they're being combined in an extremely atrocious way. It's like taking a prime steak cut of Wagyu beef, then boil it with basil and oregano, before pan-searing it until well-done, then serve with a scoop of vanilla ice cream on top.
In a vacuum, none of the steps arr partucularly bad. Boiling and pan-searing are perfectly valid cooking methods. Wagyu beef, prepared correctly, is delicious. Basil and oregano are fine spices, and vanilla ice cream is quite agreeable. It is the combination of all of them that creates a dreadful dish that hardly anyone can tolerate. And that is this manga. An incoherent, repetitive mess that fails in so many ways we might as well not bother counting them all. Don't waste your time, there are better stuff out there.