I think micro black holes routinely pass through the Earth and are manifested by the disappearance of keys and socks.
To the best of my grossly over-simplified understanding of that video, the essence of the argument is that any real black hole will have some rotation, and is therefore described by the Kerr metric (named after the same Kerr talked about in the video) and the theoretical point singularity of a non-rotating (Schwarzschild) black hole now becomes a ring singularity perpendicular to the axis of rotation. Also, even in a theoretical non-rotating black hole, quantum uncertainty suggests (but doesn’t prove) that the singularity might not be smaller than the Planck length, and therefore not “infinitely” dense. But this is only conjecture based on known laws of quantum mechanics.
I love that Kerr is 89 years old and still doing work like this.
What really blew my mind in that video is that there might be a relatively normal region inside the black hole. “Normal” enough that a human could theoretically live in and that meeting the singularity was not necessarily in your future. 
Yeah. That would also explain how we get dumber as we get older. The gentle flux of passing micro black holes sucks down a brain cell or three each time one goes by.
I have a theory that there’s a micro black hole in every woman’s purse. They are bottomless, aren’t they? And when you search for your keys/tissues/pills, they are always stuck in that black hole.
That might explain all the micro-breweries imploding.
My experience is that purses point to one of several pocket universes, each of which is only purse sized. Which pocket universe you access is random. Insert a phone, grab again and you pull out a makeup case. Grab a money clip, put it back, next time it’s a bundle of receipts. If you want the keys, you simply have to keep trying until you succeed. Etc. Perhaps there is some way to control the selected universe via conscious effort, but it has eluded me so far.
Mmh, maybe I have to revise my grand purse theory 
. Yours sounds very plausible, too. Maybe we can work out a grand unified purse theory.
It’s both. It’s Schrödinger’s Whoosh!
The sound of air running into a black hole.
I’m only worried about black holes to the degree I’m also worried about the odds of being launched into the sun