Mainly because a lot of the problems these guys are talking about just not materilaizing within the franchise have existed since like 2012.
Too many quips? Avengers 1, Dark World and Age of Ultron were infamous for this.
Every new movie is a sequel hook? Iron Man 2 was a 3 hour trailer for the Avengers, and this series popularized post credits scenes
Bad Special Effects? Phase 1 films looked like they were cooked up in about a week because their sets were so cheap.
Bad writing/Too much bait and switch? Remember how mad fans got over Iron Man 3 with the Mandarin twist?
I think all this discourse is less about Marvel “not being good anymore” and more about people starting to unconsciously realize that mindless corporate shlock isn’t actually that gripping once you start holding it under the microscope. Like this series has been going for 16 years and hasn’t actually changed, of course you’re sick of it.
I would have liked if they chose to tell a well rounded story and be done with it. Problem is they are incentivised to milk every franchise to the last drop because it makes them easy money. I was generically interested in Marvel movies when I was a little bit younger but you go through the whole ordeal of the snap bullshit which was set up and expounded on in multiple movies only to learn that they will carry on with this bullshit for god knows how many “phases” and it becomes extremely exhausting. They even released a digital card game which is called Marvel Snap. Jesus Christ just let it go already.
The only good thing to have come out of all this is the Guardians of the Galaxy video game from a few years ago. Everything else has been overhyped or just plain shit.
To be fair to MCU, this is exactly how USA comic market works. They keep their characters forever - the oldest Marvel ones like the Human Torch are in action since 1939, just year after Superman debuted as the first classic superhero. It’s part of the deal.
This is true. I guess seeing this spill over movies feels novel.