I honestly think this hapened because in the 00's, cape comics where given to old fanboys (Bendis, Geoff Johns) who could write a comic yet when they got a sniff of importance decided to either write really boring stories for characters they didn't get or just straight up fan fiction.
Then in the 00's you had the internet culture around comic books slowly but surely getting more political, one of our first big industry taste of pointless controversy could be seen here: https://www.cbr.com/political-controversy-the-heroic-age/
Eventually the whole journalist micro cosmos started to form around one type of culture. I honestly don't see it as "politics" anymore, I see it as a "Mentality" or "Modus Operanti", since you know, comics were always left leaning at best when it came to speak about a message, Steve Ditko forgive me.
So due to that climate, you saw marvel pushing some absolute shit writers who, like you said, do not get comics, let alone super hero comics to write some of the most boring and opinionated trite I've ever seen.
In 2004 I was all over capes, In 2019 I don't even go to win-o-threads anymore, let alone buy anything. It killed my desire, the lack of focus, the amateur writers. I think only America produced any feeling out of me.
As for independent comics, there are plenty of stuff I enjoy coming out actually, not from the cape genre though. These were always personal, full of opinions and ideas, except the individual either cares real bad about it and does a good job, or feels less corporate, less uniform somehow.
Even as I said that, there were some fun shit in the 10's. Like Prez!