I think that 'grim dark' was also a product of the time it was made. The 90's had a 'grim dark' thing going on in media in general at the time. There was some

I think that 'grim dark' was also a product of the time it was made. The 90's had a 'grim dark' thing going on in media in general at the time. There was some pretty dark comics and cartoons at the time. Things like Spawn and a lot of other late night cartoons of the time. Music like Marilyn Manson, Nine Inch Nails, Tool all had that weird dark vibe. Goth subculture was a pretty big thing in general. Then there's movies and stuff. Plenty of dark weird movies from the 90's. I think in general culture's kind of moved past that to like you said more of a lighter tone to things. That's not to say 'grim dark' won't become a thing again though. Culture tends to come and go in cycles.