I'm not sure why Netflix chose the whole GRIMDARK vibe when dealing with Marvel properties - given how the movies were presented and the success that drove. Then tried to flip it with Defenders and such, and got neither Nolan-style gritty or Favreau flashy right. The only one that worked was Jessica Jones, which is quite a deep and involved, character-driven story (and, of course, marvellously played by Ritter and Tennant.)
Daredevil especially still didn't grab me despite the fantastic Charlie Cox and Vincent D'Onofrio: very happy to see them getting a second shot at the roles but with Marvel leading. In particular the intentionally shocking ultraviolence seemed there for, well, intentional shock value and as a marketing point rather than to drive the story, and did not go down well with those expecting Iron Man or Cap-style glossy. (Or their lunchbox-buying, subscription-controlling, parental-lock-enabling parents.)
Agents Of SHIELD worked much better for ABC(aka Disney) because it definitively wasn't about superheroes - a bunch of ordinary if insanely talented working schmos whose job it is fit in around them, to deal with the terrifying and extraordinary. Even Daisy becoming Quake worked because it was unexpected (I honestly thought she was a goner until the cocoon cracked), difficult and took a lot of adjusting all round. It also followed more closely the feel and tone of the movies, and a little of the production quality. Plus that cast.
It lost its way after season 4, which happens to a lot of shows, but finished out strong.