I do like his succinct explanation of the difference between “many worlds“ and Copenhagen. That is, a measurement or a photon collapses the photon’s wave function from a quantum superposition to a single state in the many worlds view because the photon in your universe picks one path and the other universes pick the other paths. Whereas in the Copenhagen view the photon wave function collapses because it interacts with a macroscopic object (an eye, a cat).
Tim doesn’t like this explanation because he says the definition of macroscopic is unclear. But I think it’s extremely clear. A macroscopic object is one made of a very large number of particles. Each particle has a wave function. All of those wave functions have become so enmeshed with each other that they have essentially collapsed. And any particle that interacts with them has to lose its quantum superposition too.
Of course, Sam doesn’t point this out because he hasn’t studied quantum physics. But where he does take issue with Tim is when they start debating free will.
Sam says a person choosing between a crème brûlée and a bowl of broken glass might think he’s choosing freely, but he can’t control the subconscious thought processes that determine his choice. So he doesn’t have free will. But Tim says he doesn’t care what the subconscious thought processes are, as long as he doesn’t have to eat the broken glass.
So Tim and Sam have different opinions about whether a choice that you are happy with was done with free will. Both agree that it was orchestrated by some unknowable force that is hidden from you, in your subconscious mind. Sam says that means it’s not free because we’re not in control of that force, and Tim thinks that it’s only not free if you don’t get what you want.
And even though he veers to the pedantic, I agree with him.

