Speaking as someone with an academic background in physics, I don't think the group as a whole as anti-MWI as you seem to imply. It was taught at my university as part of the standard quantum sequence, and many of my professors were many-worlders... What isn't taught and what should be taught is how MWI is in fact the simpler theory, requiring fewer assumptions, and not just an interesting-to-consider alternative interpretation. But yes, as others have mentioned physicists as a whole are waiting until we have the technology to test which theory is correct. We're a very empirical bunch.