If you have some idea to compare with what he says, you will hear more than what he says; his understanding will be one-sided; that is naturalness.
(Suzuki got it all mixed up :-)
Neutreno masses and dark matter are coupled/ but not exactly at the same place. Think of it as a wormhole connection. Usually when you turn the equation 90 degrees, you get a better picture.
The flat universe is flat because it always was. Although I expected it to create a ball. Coincidence problem. Anyway, it did not start from a point/ although that explains the expansion. What you recognize is science thinking in linear lines. The concept of expansion is not connected to a single point/ but it explains the kind of expansion as a concept. So that created a circle, same as the universe has :-)