I believe in Pilot Wave Theory. And the more I read - the more I believe. From Carlo Rovelli's Reality Is Not What It Seems:
"...particles, in which they are not described by their position at every moment, but only by their position at a particular instant - the instant in which they interact with something else."
"Electrons don't always exist. They exist when they interact. They materialize in a place when when they collide with something else."
Tell me those two quotes help explain the Double Slit Experiment. And they reinforce the case for Pilot Wave Theory. The video needs to be updated to reflect the newest quantum gravity theories.