I'm not sure if it is that way. I didn't reject it because he was being dark for dark's sake. It's that his take on the world was so utterly devoid of meaning that I couldn't relate at all.
The only one I might disagree on is Grimgar; have to see how that finishes up first. Otherwise, I agree. I enjoyed watching things as they came out just for the weekly anticipation, but as they finish up there's nothing I think I'll ever rewatch or revisit.
Oddly, Konosuba comes out of this season as the only series that does what it set out to do. The rest felt like they faltered or lost their way in some fashion. I don't rate Konosuba highly, but I appreciate that it wanted to be a goofy, fanserservice-laden comedy and it was...a goofy, fanservice-laden comedy.