I love 3 hour epics as much as anyone. Sometimes when I watch what has become a regular runtime of 120-150 minutes, I sometimes think this should have been a 90 minutes movie. But ofc I agree with others here in the comments that a movie needs to be as long as it needs to be to tell the story, not shorter and not longer than needed.

Still, movies there is definitely more movies these days I would rate as average that have long run times.