Thanos’s snap in Avengers: Infinity War is arguably the single most consequential event in the Marvel Cinematic Universe. To remove half of the living universe in one fell swoop amounts to a loss of life on a scale we barely have numbers to quantify. Then, everyone who remained behind had to cope with an impossible trauma. By the time Bruce Banner brought everybody back five years later, everyone on every world had changed forever. The aftermaths of both the snappening and un-snappening are simply a part of the MCU’s storytelling makeup from here on out.
It didn’t take long into Phase 4 for the MCU to show the aftermath of the blip from a layman’s perspective. WandaVision episode 4 showed
The horrifying reality is that those who blipped didn’t actually feel anything. One moment Yelena was in a bathroom, and the next the bathroom walls were a different color as five years went by in a snap. There was no pain, no time to parse what the strange dust was, and no sense of disappearing with an impulse to say goodbye. According to the blipped, they stayed in place while the world around them changed in confusing and impossible ways. By the time they realized anything was wrong, they’d already lost five years of their lives.
Monica was asleep when she blipped. From her perspective, she took a nap and had a Rip van Winkle–esque awakening five years later. That somehow feels kinder than those who were conscious during the time shift, who didn’t even have the benefit of experiencing a transition between their lives in 2018 and the new reality of 2023.
Of course, both Monica and Yelena quickly discover that the one person they need to contact upon their return is dead. So, the result of their slightly different yet still traumatic blip circumstances is the same. Multiply what they went through by literal billions of life forms across an entire universe and the full effect of Thanos’s snap becomes even more unconscionable than it seemed in the first place. Put the entire MCU in therapy.