For goodness sake.
Your problem is oversimplification.
First - You need to get the idea about what the argument was all about!
The row between Einstein and Bohr was not in essence about wave function collapse - that was the detail, a sideshow, not the essence of the classical world objection.
Collapse. Multiverse, have all the same problems for classical physics.
Einstein was happy with a world in which all things became definedat collapse. That wasnt the primary problem.
The row (that went on for decades) between Bohr and Einstein and hopped from one issue to another all had the same essence
1/ that in Einsteins classical physics world all things had a unique state - it may not be known, it may even be unknowable, he was happy to add hidden variables, but it was a single state. Not a multiplicity of concurrent possibilities not defined till observation.
2/ So in his world particles were born for example as a left and right hand glove - when you observe the left, you know the other must be right, but they were never indeterminate, the left was always left, only your knowledge of them was indeterminate ' the state was UNIQUE at all times..
Bohrs world was the opposite
1/ In Bohrs world everying had all states concurrently. The defined state didnt even exist till observed
2/ The act of observation of a left hand glove, also created the right hand glove that was not in that state till the left was observed.
3/ And this has implications for multiplicity of past states, not just the current - as schrodinger noted.
4/ All the experiments done confirm this view.
Many worlds fundamentally doesnt change Bohrs view, it rationalises it in a different way.
Sure it gets rid of wave function collapse (but that was the detail - that of itself was not the issue for classical physics - it was the concurrent existence of all states, rather than single existence of one)
Everett leaves the philosophical problem unaltered It does it by making all states coexist, just in different universes. It is still the same problem. And Do you really think there are an infinite number of you?
It still kills the presumption of unique state of the universe.
And it is still the death of classical physics.
It is also a non starter (in my view) because it violates observations of the born rule amongst others indeed it presumes discrete states, not the fuzziness that is a wave equation. It fails on decoherence too - why we think the universe in macro state has the illusion of a single existence..
The problem I would have in explaining any of them, is by the time I reduce it to simple concepts, ( like the born rule issue) you would challenge the precepts because of the overs implification, and then you would tell me I am wrong again! There are many variants to everrett in cluding many minds. Multiverse is not one school of thought. They all have the same problems.
The reality is, that the philosophical arguments on all of this pretty much stopped at the time of the war, and never got going again. Dont think about it, and just use the math has been the mantra ever since.
And from the perspective I introduced it NOTHING has changed:
So back to the essence of why I mentioned it all.
Is about objective reality.
I said to those who use science to prop up their deterministic causal world which is their stated reason for not needing other explanation
(you have to admit that is mainstream atheist thinking)
I said that science does not have this nice clean causal deterministic world. And I used the arguments on quantum mechanics to illustrate it.
So in my view - hanging on to it as a philosophical prop for existence is to join an argument about the reality of existence, it doesnt solve the argument about the reasons for existence!
Does that explain any better?
I am certainly not after an argument for its own sake or belittling anyone
I am also tired of atheists arguing my knowledge of science is poor, simply because it is hard to explain hard science to them!
That was quite a long post. You could have just said "I have no intention of admitting I was wrong to ridicule you for your assertion, nor do I have any intention of admitting that I made an error." I would have admired the honesty in such a post. Best we don't speak any further.