Pilot-wave QM has all the calculations as MWI for describing the pilot waves. Then there are particles bouncing around the waves. And then there's the waveform collapse that happens whenever the particle actually does something. And if you want to explain entanglement, you have to deal with higher-dimensional pilot waves somehow controlling different particles in parallel so the location of one depends on the location of the other.
The Copenhagen interpretation is QM with some bizarre useless stuff added on. Pilot-wave QM is the Copenhagen interpretation with some bizarre useless stuff added on.
In Bohmian mechanics there is no wavefunction collapse "when the particle actually does something". There is something that the Bohmians call "effective wavefunction collapse", but that is an emergent phenomenon, not a fundamental dynamical process. The math of the theory says that the wavefunction never collapses, but since the particles are always carried on one branch of the wavefunction, you can treat the wavefunction as if it has collapsed to that branch once an observation is made, and the particle position/velocity calculations w...
What is something you used to believe, preferably something concrete with direct or implied predictions, that you now know was dead wrong. Was your belief rational given what you knew and could know back then, or was it irrational, and why?
Edit: I feel like some of these are getting a bit glib and political. Please try to explain what false assumptions or biases were underlying your beliefs - be introspective - this is LW after all.