I have stated before why I think it is a good movie many times.
However all the complaints I hear are superficial. It is like you people are just reaching for little tidbits they can use for an Honest Trailer, or Everything wrong style video on youtube. All you guys just want attention. You infuse sexual innuendo into an analogy thinking you will get likes.
Like for example, all you critics keep saying Superman is too dark or not portrayed lightly enough. Who cares? It does not detract from the awesome visuals, special effects, and everything that makes a comic book movie good. Plus Superman is not portrayed dark. You people are confused. Superman is the nicest thing in the movie. Everything else is dark. The world around him is, and he is the shining beacon of hope.
Or you guys do not like the intro for the other characters. Geez, it was like a minute or two. Plus these characters are powerful enough, that they dont need to be sold on personality, and how well they will gel with the other characters, like MCU players. In MCU, all the new guys get introduced with hokey jokes and gimmicks as in Spidey, or Ant-man, jogging session with Cap and Birdboy. (seriously a Marisa Tomei cameo, I like her too but why? Its almost disrespectful. Does she need work?)
Or the apocalyptic dream sequence. I thought it was done artistically. We went from the dark scenery of the present, to a brightly lit, yellow sand desert. I liked it. It really stimulated me. The critics fail to grasp what is important and good with this movie.