Sorry, I should have said “supports” rather than proves. There can’t be any empirical evidence for PWT over standard QM.
But this doesn’t make any sense. PWT has exactly the same empirical support as standard QM. Again, saying the bouncing drop experiment is observable evidence for PWT is like saying that the vibrations of a guitar string are observable evidence that there can be a kind of wave that propagates in a vacuum with no medium. They are just two entirely different domains.