It is no hidden secret the events of Avengers: Endgame i.e., the blip, managed to shellshock the entire world, after countless people thought they had lost those that they held near and dear - especially following those traumatic events having moved into Phase 4, when the entire world was trying to move on.
There was no time other than during the blip, when those who survived Thanos's snap were at their most vulnerable, and frail.
According to Scott Lang's Memoir: Look Out For The Little Guy!, he discloses an unseen part of his, Scarlett Johansson's Black Widow's, and Chris Evan's Captain America's conversation in the Avengers Compound, after first being brought back adrift in the Quantum Realm for 5-years.
It is during this unseen part of their conversation, where Lang reveals Chris Evan's always stoic and invulnerable Steve Rogers, momentarily lets go of his moral personality.
'Chris Evans' hero quickly interjects, and, as described by the book, "[Steve's] rage uncharacteristically [gets] the better of him." Steve Rogers then makes the stakes very clear to Scott: "That maniac took out half of all life. Not just on Earth. In the universe."' - The Direct
Of course alluding to Thanos, Scott at the time had no clue of how clear and formidable the big bad of the Marvel universe truly was, which made it all the more difficult for Steve to inform him on the subject without losing his temper.
Additionally, Lang mentions at another point in his memoir, that Steve was foremost upset at Doctor Strange's Time Stone for ever even making its way to Thanos in the first place - being one of the catalyst's that he needed to execute his will.
You can now own Scott Lang's Memoir: Look Out For The Little Guy!, on Amazon.
Adrift in space with no food or water, Tony Stark sends a message to Pepper Potts as his oxygen supply starts to dwindle. Meanwhile, the remaining Avengers -- Thor, Black Widow, Captain America and Bruce Banner -- must figure out a way to bring back their vanquished allies for an epic showdown with Thanos -- the evil demigod who decimated the planet and the universe.
Avengers: Endgame is a 2019 American superhero film based on the Marvel Comics superhero team the Avengers. Produced by Marvel Studios and distributed by Walt Disney Studios Motion Pictures, it is the direct sequel to Avengers: Infinity War (2018) and the 22nd film in the Marvel Cinematic Universe (MCU).
Directed by Anthony and Joe Russo and written by Christopher Markus and Stephen McFeely, the film features an ensemble cast including Robert Downey Jr., Chris Evans, Mark Ruffalo, Chris Hemsworth, Scarlett Johansson, Jeremy Renner, Don Cheadle, Paul Rudd, Brie Larson, Karen Gillan, Danai Gurira, Benedict Wong, Jon Favreau, Bradley Cooper, Gwyneth Paltrow, and Josh Brolin.