system
Given the following post, respond as if you're commenting on Reddit:
human
CMV: The reason that Marvel phase 4 and beyond isn't doing as well as pre-Endgame Marvel is not because there's been a significant dip in quality

Marvel movies are 100% as good and bad as they have ever been. There are several reasons they are comparatively under performing (although still a massive success) that are unrelated to the execution of the movie/tv show. In no particular order:

1. People are primarily remembering how exciting the culmination of phase 3 was and comparing the lack of interconnectedness in phase 4 to it. Phase 1 did not at all feel interconnected and that really didn't start fully coming into focus until Civil War.
2. Marvel blew their load with all the super big name heroes in the infinity saga and of course people are going to be less excited about lesser known characters and/or properties where their beloved characters are passing the mantle to the next generation.
3. The multiverse saga is jumping in pretty much immediately with far more convoluted and "nerdy" ideas like the multiverse coming into play in the 2nd property of the entire cycle. The infinity stones didn't actually have any kind of purpose beyond a vague "we don't want Thanos to get those" until goddamn Infinity War.  This saga requires a lot more commitment from the viewer. This is an inherent problem with the MCU and comics in general. Nearly EVERYONE reaches a point where it gets too convoluted to stick with it indefinitely.
4. Anti-social-progress buffoons ~~can't~~ need to lash out at anything that is made that doesn't gingerly cradle their fragile egos and shows the perspective of characters that they don't identify with

I think I had another reason but I got a phone call and forgot. Change my view.

Edit: Corrected an initial editing mistake.
gpt
I'd like to change your view that these movies aren't "doing as well." The latest Thor movie made twice as much as the first Captain America movie. Guardians of the Galaxy was considered a giant hit for Marvel and yet the latest Strange movie made about $175M more. The latest Spiderman movie made more than the first Avengers movie, made more than any MCU movie except the last two Avengers mega-event movies.