Mass destruction and its consequences

This is a recent cliché. To make it clear, I have no problem when half a city or an entire city is destroyed in superhero flicks. You can expect for that to happen when god-like beings are battling on the streets. The problem that I have is with how the studios decides to deal with these consequences.

At first, it was just a side commentary, usually a funny one. It addressed just the damage done to properties "“ something along the lines of, I hope they have good insurance. But this cliché changed after the arrival of Man of Steel. How come?

Now the damage to property falls behind the loss of civilian lives. And now, prominently in the big ensemble movies, it is mentioned ostentatiously that the area has been cleared, that all the civilians are out of harm's way, that the area is deserted, and so on and so forth.

Which is weird. Very weird as far as I am concerned. You cannot expect me to believe that a handful of people, even if superheroes, have managed to evacuate an entire city in mere minutes. Just like you cannot expect me to believe that three major fights can be contained to the same unpopulated area, even if they happen moments one after another and they involve the same characters (Batman v Superman: Dawn of Justice).