Marvel is popcorn fun, sometimes better, sometimes worse. These are not even planned as some art-aspiring movies, so as long as expectations are managed everybody is fine, earnings at least says so and if you don't like whole genre then simply skip them.
Actually, snobbish bashing of Marvel became such a cheap 'look at me' desperate attention grab attempt of teenagers that I don't take it seriously. In same vein as globalization protesters focus on McDonald for some reason. You have endless line of say family movies that are absolute nauseating crap from cinematography, storytelling, character development etc., among other fails of hollywood, anybody wanting to be actually taken serious would start with those 'gems'.
It can be part of a quality experience, such as so-called "woke" content can be, if it's done in the right way. But that needs good content creators, with enough leeway and time to make a good experience, same as everything else.