No, it doesn't, and that's exactly the point. Everything HAS become grim and gritty, and anything that isn't is automatically (and incorrectly) written off as "campy".
And that's just sad.
You are spot-on; the obsession with everyone being "dark," "grim and gritty" offers no contrast--the very thing which exists in real life--ironic, since the advocates of "grim and gritty" believe their content is realistic. They ignore how audiences--contrary to Hollywood's wish--are not expecting all characters to be dark, psychologically damaged or morally bankrupt, or view them as normal.