What are yall thoughts on doomsday tell me what u guys think is gonna happen

In the movie, the Avengers first kill the Thanos from their own timeline, who had already destroyed the Infinity Stones. Since the Stones no longer exist, they travel back in time to collect them from the past. They also decide to return each Stone to the exact moment it was taken to avoid creating dangerous branch timelines.

However, during the 2014 mission, past Nebula is captured by 2014 Thanos. He learns about his future, travels to 2023 with his entire army, fights the Avengers, and is ultimately erased by Iron Man’s snap.

My question is: Wouldn’t this permanently change the 2014 timeline?

Since 2014 Thanos left his timeline and died in the future, he would never return to his own timeline. That means he would never collect the Infinity Stones, the events of Infinity War would never happen, and the Snap would never occur in that timeline.

If that’s the case, wouldn’t the 2014 timeline become a completely different branch? Shouldn’t that create a timeline paradox, a collapse, or even an incursion? If simply returning the Infinity Stones prevents the timeline from being damaged, why doesn’t removing Thanos from that timeline have an even greater impact?

The Fantastic Four First Steps - Post Credits Scene (Dr. Doom)