In your opinion, perhaps. Other films are made to be provocative-- to make you think or reflect. Certainly, a lot of the "arthouse cinematic masterpieces" aim for that as a goal rather than purely entertainment.
You're arguing against a strawman here... nobody is saying making an avengers movie is low effort. Certain aspects of an avengers movie though require less effort.
In your opinion, perhaps. Other films are made to be provocative-- to make you think or reflect. Certainly, a lot of the "arthouse cinematic masterpieces" aim for that as a goal rather than purely entertainment.
You're arguing against a strawman here... nobody is saying making an avengers movie is low effort. Certain aspects of an avengers movie though require less effort.