I agree with a lot of what you have said, but I would strongly disagree with your conclusion. >An "interpretation" that renders the core predictive content of

I agree with a lot of what you have said, but I would strongly disagree with your conclusion. >An "interpretation" that renders the core predictive content of the theory meaningless is a bad interpretation and a waste of everyone's time. Given that the different interpretations do not make different predictions, the only relevant way to judge them is to ask the question "is X interpretation a useful way to think about the universe". This can be answered empirically, practitioners of both MWI and CI have both made important advances in quantum physics, therefore neither are a waste of anybody's time. There is a reason why students generally get taught both, there is nothing wrong with having multiple ways to think about things.