Marvel was always setting themselves up for failure by splitting the multiverse in between movies and Disney+. It was always obvious from the jump, yet you had some posters insisting otherwise.
They do and but it's dwindling. The older fans have been complaining about changes since the 80s and probably the 70s.
Thing is if they moved forward and actually made permanent changes the older fans base will complain but they aren't going anywhere.
But the focus on Superhero comics in America hurts the industry too. Tons of girls read manga that are just "slice of life" and think comic books are just superhero fluff. They don't know about a series like Love & Rockets or Strangers in Paradise. Even with comic fans in America a good chunk don't veer away from the superhero genre so they can't suggest a series in that genre to a non-reader
I think you're confusing the YA audience
Plenty of anime/manga are "superhero" influenced