Originally Posted by
TriggerWarning
Yes he undid the snap but think about the helicopter you saw crashing in the post credits scene of Avengers: Infinity War. It crashed into a building but being NYC with its crowded streets there is a very good chance that the debris killed someone below as it fell. That person wasn't snapped out of existence.
Or how about the person who was set to have a life saving operation in a few days but their only matching bone marrow donor got ashed out. No donation means they died naturally.
Or the infant home alone whose parents got ashed out and the infant dies of dehydration over the next few days as it screams all alone in its crib.
Did these people come back? At what point do you draw the line as to who came back vs who didn't?
The reality of a snap is that 50% die immediately followed by a 2nd and 3rd wave of deaths in the moments, days, weeks, and months to follow.
Then after Tony's unsnap you get another round of deaths as the only thing more devastating to a world losing half its population would be that population coming back 5 years later.