Plus, the Endgame team is still trying to explain Captain America’s timeline after Steve went back to live with Peggy, so even things that did happen aren’t exactly making sense to everyone.
So Thanus will have to join the pile of Avengers: Endgame theories that did not pan out, although there are plenty of theories that did turn out to be true.
And it’s not like the movie didn’t have some crazy twists, so something equally strange could’ve happened.
I mean, a rat was responsible for Ant-Man even being in the movie.