I’m just talking about accepting that the characters in the story, and the setting in the story...
If something is set in 1963 Dallas, the reader can reject it based on it not matching what 1963 Dallas was. It doesn't really matter what the author's intent was.
This is the height of fantasy. The fantasy of one simply doesn't match up with the fantasy of another. And since we have great concepts like the Multiverse, which is also part of the universe, I tend to go with that as a solution to the contradictions.