Truly excellent videos. I enjoyed the first one especially, even though the second one looks more professional.
I think any nonweird theory of the quantum world would be quite popular! But then, as is said in the videos, all theories must be nonlocal. I think the maths are basically models, approximations of what really happens. It helps us make predictions, but it doesn't really shows us what's going on, anymore than a curve on a chart shows us what obesity really looks like.
Our interpretation of the math of matter waves is definitely not agreed on among physicists.
As far as I know, all are agreed that for all matter, the wavelength times the momentum always equals the same constant called Planck's Constant. It's the many models that try to explain what the wavelength is that get pretty strange, even evoking infinite universes, the electron taking all possible paths and wavefunctions that collapse whenever anyone looks. As far as I can tell the deBroglie Bohm Pilot Wave Model is the only credible one that seems to brings it all back to normal reality. Hopefully someone will design an experiment to verify one model.