While everything you said is true, this:
is essentially what MWI is, as far as I can remember (it’s been a few years). The difference is that rather than assume that measurement results in probabilistic collapse of all but one state in a superposition, I assume that it is a deterministic fact that future portions of my current wavefunction will experience different outcomes, and because the states measured are orthogonal those portions become non-interacting and non-interfering after decoherence. The whole point is that decoherence prevents the “other worlds” from interfering with our own, and preventing decoherence is key for quantum computing.
I do object to using this to try to explain quantum computing regardless, no matter how “cool” it sounds. It’s essentially guaranteed that just about everyone who hears it will misinterpret it.
