Good epic story but a HUGE flaw

Rating: 7/10 (27 April 2019)

The movie had an epic tale and fights and humor like you would expect in a Marvel movie....but
This is a spoiler
When the people are brought back, they bring them back 5 YEARS after they left and I presume they ended up in the exact same spot.

If 3.5 BILLION people were to suddenly materialize there would not be enough food, shelter or ability to deal with them. The entire world economy and welfare would self-destruct.
After 5 years many people would have moved on...married other people, moved away changed jobs whereas the people 'coming back' would have nothing since they would have probably been declared dead.
What about someone coming back into their old bedroom only arrive while another couple (who bought the house from the estate of the person who vanished) were having sex.
What about people who vanished from cars on the highway. Did they return only to be run down and killed?
That flaw ruins a good story for me. I expect a bit of stupidity in any movie to fit a script to a story, but this one was too glaring to deal with.