Yeah it's also critics. I had a few high profile ones at the screening and one of them destroyed it on yahoo reviews. And his main issue was that the movie was to serious and to dark and not campy enough for a superman film. If you went in expecting 66 batman or batman and robin them your a fool. And he kept, even during the movie, repeating about how superman and batman would never allow anyone to die or kill anyone, and that's only ever been done by Snyder. And he contrasted it with Marvel. Even though we know people died in marvel to. The difference is that Snyder didn't hide it. He put it front and center.
I personally would like superman a wee bit more cheery...but that's been done. Over and over. I'm ok if someone wants to take it in a new way. And the only way you could show just how powerful these characters like superman are, compared to say Spider-Man or Thor or Cap, is with fight scenes that illustrate that power in a real world way. People bash MOS for destroying metropolis but look at what hulk did in avengers. He rode one of those alien snake/dragon things through a building. Guess what, in the real world that would destroy a building. Lol
And as I said, batman killed in the Burton movies, superman killed in the Reeve films, batman crippled and people died in the Nolan films...Wintee soldier had hundreds die. cap kicks a guy in the throat and off the boat. Well if you can't breath and fall 30-40 ft into freezing cold ocean your going to die. Lol he throws his shield and hits a guy in the head, and after it hits the guy it embeds in a steel bulkhead. Guess what, that would kill.
It just seems people go in wanting it to be an issue and find something to justify it. Because destruction, (every super hero or Godzilla movie ever has that) or to dark (Nolan and burton where not very light) and killing (avengers, iron man, Thor, batman89 and returns, Superman(reeve) ect all had killing by hero) is in every movie. And those keep being used as why MoS and BvS are not good. It's silly.