OK, so you're a physicist, and you know that, when the dust settles and the true theory whatever-it-may-be is found, it's going to have multiple worlds in it, rather than violating relativity.
At what point, in your opinion, should physicists go ahead and announce this fact to the public as the official verdict of Science?
Make no mistake, quantum gibberish has trickle-down negative effects on the rest of the planet - people watching "What the Bleep Do We Know?" and losing hope in Reason. It may not hurt them any less than disbelief in natural selection, on average.
At what point should physicists get together and say: "Oops! Werner Heisenberg was wrong about the special role of consciousness. We now know this for sure. Everyone stop reading 'The Secret'."?
It's easy to say "Don't be too emphatic about that truth there" when you're a physicist and you can see the arguments clear as sunlight. If we were all evolutionary biologists we wouldn't need emphatic defenses of evolution, either.