It's all such a meta conversation, it doesn't actually matter anyway. We are all millions of omnipotent and omniscient and omnipresent players over the chessboard that is Dungeons & Dragons. And there is no reason to argue terms because none of our own decisions matter in the slightest to any of the other million players across the chessboard. Even if you manage to convince one person here of your "theory" of the multiverse and planescaping and moving between worlds or any of that crap... there are still a million minus one other people for whom nothing has changed. So what do you honestly think you are gaining?
To me, again... it seems to me nothing more than people trying to establish a "canon" for what is "true", and that they end up on the "true" side of things-- because apparently they think that matters. Well, it doesn't. There is no "truth" about any of this. Because it isn't one story. It is hundreds of millions of stories, each with their own individual "truth" (and in many cases, not even that.)
To me, again... it seems to me nothing more than people trying to establish a "canon" for what is "true", and that they end up on the "true" side of things-- because apparently they think that matters. Well, it doesn't. There is no "truth" about any of this. Because it isn't one story. It is hundreds of millions of stories, each with their own individual "truth" (and in many cases, not even that.)