I got in a heated argument with my coworker today about this being AFTER End Game...
He just doesn't see that the world would be that much different post snap and un-snap.
I'm like "Do you have any idea how the worlds governments, religions, infrastructures would be in complete chaos if half the people disappeared. The chaos in the streets... forget that when everyone comes back they'll be all 'who's in my house?!'"
Yeah we'll just go right to a school vacation in Europe, which I'm sure would be right back to touristy destination...
They have to address all this... it's too weird not to.
Exactly. Not to be pedantic, but the world was trying to get on with things 5 years after the snap. And the Antman at the window / Professor Hulk snap scene / birds chirping leads me to believe that the Thanos "snap" destroyed half of all life (not just half of all sentient beings). So half the bacteria, viruses, algae, amphibians, birds, mammals, fish, etc... does this include the flora and fauna also? In any event, just focusing on the humans, Thanos' snap caused 3.5 billion earth humans to die. Tony made it clear with Steve and later Bruce, that the new "snap" was NOT TO ERASE THE PAST 5 YEARS (and therefore lose his family life) but just to bring back all of the "dead" into the current time. Which implies that they COULD HAVE GONE BACK TO THE EXACT MOMENT OF THANOS' SNAP 5 YEARS EARLER, AND UNDONE IT.
OK, leaving the non-human creatures out of the equation, TONY'S SNAP WOULD DESTROY THE PLANET. To suddenly have 3.5 billion people on earth again (5 years younger by the living's standards)... Infrastructure, emergency rooms, hospitals, utilities, water supply, food supply would be in utter chaos. Stress, anxiety, severe depression, bipolar disorder, PTSD, homicide, suicide would suddenly skyrocket in both the living and newly-alive-again. Religious communities would be struggling with such a massive paradigm shift.
The MCU basically gave us the non-religious version of the Biblical Rapture and Battle of Armageddon.
Showing Peter Parker and his group of classmates back in high school hallways, going to 3rd period Spanish class like nothing had happened, simply does not make sense. Would there not be people in Peter's sophmoroe or Junior class who survived the snap, and are now 22/23 years old? My 2 cents guess is that we will get a very brief, unsatisfying, timy-wimy wave of the hand gloss over all of that, and rapid focus change to Mysetrio.