Hodor is Willis, Willis is Hodor.
Because of the time paradox, a unique moment was created where they were the same brain was connected across time. I have written three previous pieces about the Hold the Door episode between season 6 and now (mostly talking about time paradox).
If Bran could warg into people in the past, there are about a billion more efficient choices he could make to eliminate the NK (warg into NK mom before she had sex with his Dad etc.). In addition, there is no textual basis for warging into dead people and several explicit parts of the text that suggest that is impossible (did you read part 2? It is linked at the end of the article you read).
I like when there is discussion, it doesn’t bother me that people disagree (although many thousands have agreed).
Thanks for the thoughtful reply, the world is more interesting when there are multiple points of view :).