Stuff like that happens in movies all the time though. I haven't seen the movie and have remained relatively spoiler free about the movie so I am not sure how it plays out but it sounds like it is being overanalyzed.
Batman flips cop cars,drives over them crushing them, and shoots random vehicles out of the way to make space for himself.
The Avengers had a major battle in downtown New York, smashing buildings and destroying Leviathans that fell right into the streets.
Transformers have full out brawls on busy highways and crowded cities.
The bottom line is, things look cool blowing up. I don't think film makers feel the need to somehow explain that no one was in that restaurant, or vehicle etc. I think we are just supposed to assume, no one was hurt.