Some things in quantum mechanics, even the spooky ones, are empirical, repeatable and therefore provable. But string-theory is criticized even by atheistic scientist.
The phrase "multiverse therefore there is no God" actually returns a reasonable number of hits, it's quite clearly what Neal Tyson de Grassi obviously has in mind, his hidden agenda behind his agitations.
Well, yeah, the multiverse is literally the only interpretation of Quantum Mechanics we have conceived of that doesn’t ultimately require the existence of some kind of supernatural god-like entity.
So it’s that or nothing for the materialists. They surely know as well as anyone else that the multiverse interpretation isn’t a scientifically valid proposal, since it can’t ever be observed or disproven, and it can’t make any testable predictions. But, it’s the only straw they have left to grasp at, otherwise they would have to admit that their fundamental assumptions are wrong.
The multiverse conjecture was mostly composed by my brother's closest working colleague, Hugh Everett, in the 70s. I understand Hugh was an atheist. His daughter committed suicide.
Everett's daughter, Elizabeth, died by suicide in 1996 (saying in her suicide note that she wished her ashes to be thrown out with the garbage so that she might "end up in the correct parallel universe to meet up w[ith] Daddy"),[21]
It would seem to be quite difficult to reconcile multiverse, with its all possible simultaneous moral choices, with Christianity, and for other reasons as well.