This is one of the many reasons why I say Tony Stark is a bigger villain to the universe than Thanos.
A sudden LACK of mouths is much more favorable than suddenly DOUBLING them.
I order to keep his family alive, he just brings them all back, many years out of place in a universe completely and totally unprepared for their arrival. Not to mention all the people who died AFTER the snap, as a direct result of the snap, will still be dead.
Tony stark is supposed to be smart. So he should know the consequences of his action, and completely disregards it.
And the series pretends he did the universe a favor.