Although Sega is now portraying Shadow as a dumbass edgelord, I actually agree with you on that one.
Yes, the Shadow the Hedgehog game was horrible, and it turned him into a edge lord and all, but before he was considered just a edge lord, he has been through a lot of psychological pain, especially when it came to witnessing the death of A FREAKING YOUNG GIRL (which was really messed up for a Sonic game, namely Sonic Adventure 2)
Still, if you look closely into his character arc, he's more then just a edgy character, he's a character who experienced messed up crap