Just skimmed over, but this is only about the oil droplets experiment - which would have been a great macroscopic model/demonstration of pilot wave theory.

If it fails the double slit experiment - then simply it is not a good macroscopic model/demonstration of the Broglie-Bohm quantum interpretation. But AFAIK Broglie-Bohm has been already proven to be equivalent to all the other popular quantum interpretations (if you give up locality), so it has not been falsified at all (and actually can't be - as it gives the same experimental forecasts as the other theories)

This looks like a great read — thanks!

Regardless, the book mentioned above is still thought-provoking, and an interesting history of quantum mechanics.