Why do physicists “believe” these strange theories? Physics is based on experimental reality. “The test of all knowledge is experiment. Experiment is the sole judge of scientific truth.” Richard Feynman.
Phisics is based on experiment.
The nature of Reality is absurd.
We don’t know what QM means, but that it is highly testable without discrepancy.
(Sorry I missed most of this, it was very dense (in a good way) and almost impossible to transcribe, best bet would be we waiting for the official video.)