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But personal identity wouldn't exist, where one says 'I am', without touching on soul/spirit.
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This just isn't true. There's no connection of being self aware and your vague concept of immortal soul. I am not even sure why do i have to point it out as it's obvious and most of the things you say are not true either.
Maybe you should research those concepts like "parallel universe" you are throwing around, because you are either blatantly lying or don't understand what you are talking about.
Just because you talk about a god, it doesn't make any of the gods that people believe in any more real.
What you linked is pseudoscience that you would immediately see if you understood something about the concepts you are talking about.
And i won't be using my time to debunk Nassim Haramein's nonsense when others have done it already
Good work! Your soul and/or spirit have successfully used your mind to hide themselves from it.