Oh for God sakes you can't judge all films on the same curve. It's like judging To Kill A Mockingbird and Abbott and Costello Meet Frankenstein the same way it doesn't work it's enough to say both are great films.

Gangster films, Musicals, Spectacle Films like Irwin Allen Films or the MCU, Comedies, Dramas, War Films, Cowboy Films are all Cinema and to debate otherwise shows a lack of knowledge of Directing, Writing, Filming, Lightning, Editing, Music, Sound, and all the other work that goes into making a film.

As for Directors coming out against the MCU well even Legends eventually can become out of touch old men wanting the kids off their lawn.