Shit argument, I abhor that everyone wants fun and humour and camp in everything otherwise it's an edge, grimdark mess, fuck that. I like that these films have a semblance of deeper thought, even if it stumbles in some areas. At least what it offers has weight.
Compare that to Marvel's offerings and any time that they try to be serious or portray a serious threat it's a complete waste of time, fail and a great shame. Nothing in Marvel's universe has any gravitas towards it, not even the Stark vs Cap scenario - nothing feels real, and any threat or menace or villain is shrugged of a second after it's introduced with a one liner for cheap laughs. Everyone feels safe, no death portrayals means that all the threats, such as big floating cities, are not real threats, as we the audience are not shown anything that in such a situation would be dark about it.
For all its faults, the DC universe is better at this, their threats are very more real and have significant more weight than anything posed by Marvel. I like that they try to bring some deeper meaning, and couldn't care less for the argument that people don't want 'edge', 'deepness' or 'thought'. I think the conflicts and world building were great carried over from MoS into BvS. Yeah there was a lot that could be improved, but I'm tired of the one liners, campness and complete lack of all seriousness is the Marvel universe.
I think it's more enigmatic of audiences whom are opposed to darker portrayals. Conversely I find the camp portrays of DC characters to be awful also, I think those character portray better outside of being the 60's Batman.