Sort of, but when discussing the stones, it leaves the What If deal altogether briefly.
Ok I I watched it
and the issue remains, here is my explanation:
In the realm of actual scientists/theorists addressing the ramifications of traveling back in time, the entire idea “branching timelines” was thought of /proposed as a possibility for one purpose, to avoid a paradox and not alter the future you came from. The idea is the protected/sacred time line.
If a single time line, what the Avenger Infinity Stone retrieval teams did would have been to scramble their future so badly there would not have been a time machine created to bring them back, because there would not have been a reason to create one. Agreed?
So the alternative idea is of branching time lines. They were thought of as an explanation, a barrier to protect your original timeline, so when you go back and change the past your have broken yourself off into a new reality and the new timeline will play out In a different manner.
Once you find yourself in a new reality, there is no returning. When asked about going back and killing baby Thanos, Banner said
, that is not how time works, you can’t go back and kill baby Thanos and fix anything in your original timeline because your (old) future becomes your past, that can’t be changed. This is as clear as it can possibly be. But then, the writers proceed to ignore that standard, the exact thing they made Banner say, lol!
So for convenience, Marvel decided to corrupt the idea of branching to time lines so they can create drama, ie wiping out half of all life and then restoring it just because they wanted too. So they made up the rules as they went. This is why I reject End Game as a satisfying time travel story, and why placing the the TVA in the realm of unexplainable is more satisfying. Just call it magic, then you can do anything you want.
But if the writers are going to include branching timelines, I’ll reject the narrative of being able to cross back to your original timeline unless maybe you are elevated to God or using something in the realm of magic. I’d suggest to Marvel, don’t try to have your cake and eat it too. Don’t try to sound scientific when you really want to practise magic.
This is why no one questions Dr. strange practicing mystic arts. But when you include a time machine created by man, then the writer runs into these issues trying to proved a scientific explanation.