Elementary particles are suspiciously indistinguishable, so even if you could copy an electron, you wouldn't even be able to tell!
See https://en.wikipedia.org/wiki/One-electron_universe
They meant this, which refers to copying the state of a particle into another (already existing) particle
https://en.wikipedia.org/wiki/No-cloning_theorem
And basically, about consciousness, what they said is true if our brain state fundamentally depends on quantum effects (which I personally don't believe, as I don't think evolution is sophisticated enough to make a quantum computer)
They meant this, which refers to copying the state of a particle into another (already existing) particle
https://en.wikipedia.org/wiki/No-cloning_theorem
And basically, about consciousness, what they said is true if our brain state fundamentally depends on quantum effects (which I personally don't believe, as I don't think evolution is sophisticated enough to make a quantum computer)