"movies becoming too Marvel"
I dunno, I love hating modern thing as much as the next guy, but this is just people being hyper sensitive. Your average 80s action comedy quips the same as any Marvel film.
I think the criticism isn’t around Marvel films being Marvel, but rather the reaction to Marvel films being popular to make every film like a Marvel film. Can’t really comment if that’s true, though I’ve definitely noticed an increase in films becoming franchises, etc, but I think that was the implication.
I see "It was just a marvel\disney film" as a substitute for thoughtful criticism on basically every film these days. Usually they say they hate the humour. Even though if anything theres more humourless films these days than ever before.