I have a particular term for certain kinds of edginess I just call “Shadow the Hedgehog writing”, where it’s more likely to come from a teenager trying to seem grown up/cool than an actual adult.

Plenty of anime/VNs have fallen in this category, giving early content warnings that the content will be dark; and then just having non sequitor turnouts like “And then the heroine stepped in a trap that severed her spine. She screamed for hours, praying for help, but none came.”

There’s a particular game whose name rhymes with “Tomato” that did this for me once. You bring some children to safety, and then go fight the attackers sending tanks after them. I came back to the kids, joking to myself “Sorry, hero, it’s too late; we already drowned in our own fear and sadness…!” And then I laughed out loud when my joke turned out right.

Worst part is, there is some grim and depressing stuff in the world, and yet so many grimdark writers don’t see any nuance in it.