Fact-Checking this Viral Bottle Trick

I did know how this works but I've never seen good footage of it.  The short section from 06:19 shows how this works absolutely perfectly.  It's really clear how the fracture occurs just after the cavitation bubbles collapse.
On an unrelated note, my daughter (14) was telling me how much she had been enjoying her physics lessons since she went back to school.  I think she would enjoy your videos so perhaps I shall have a physics girl for a daughter.