She goes into the experimental discrepancy between quantum and classical probability and then explains it in terms of a systematic error caused by a shaking reference frame.
Taking only part of the argument out of context is misleading.
And the explanation of the "shaking reference frame" is wrong. It borders on conspiracy theory ("1000s of prominent physicists didn't understand this, but I do").
Hilbert space being used to remove the effect of a shaking reference frame from a calculation is a conspiracy theory? Tell that to the people who use Hilbert space to remove the impact of a non-inertial reference frame from quad-copter drone control calculations.
The quality of physics education varies widely and it may disappoint some people to learn that their teachers weren't that good.