The main issue with how Superman has been portrayed is that these values many insist were presented to us were done in a very unclear fashion. You have to be clear with what your characters values are. Can it be done with just imagery? Yes, to a point, but you can't just assume the audience gets what this character is about with imagery alone. Sometimes we need to hear what the character is thinking because words matter.
Contrast that with Wonder Woman. Diana's values are established very early on in the film and come to ahead during the No Man's Land sequence. Her values are established with absolute clarity by herself as well as her actions so by the time she steps over the trenches the audience is 100% emotionally invested and behind her all the way. That's the pay off missing from MoS and BvS. Without clear values the audience has nothing to grab onto emotionally.
People who say the audience is being lazy for not thinking are frankly missing the point. The audience wants to engage with these characters, they don't want to decipher them. This isn't a puzzle they want to solve. There's a time and place for that type of story, but it is not within the context of this particular set of characters. I'm sorry to those who feel otherwise and feel something is being lost by not attempting to do something like this within the genre, but the reality is what you like has been tried and it hasn't worked. Honestly, it will be for the better if the other films follow WW's formula.