But when you get down to the level of subatomic particles that are regarded as precisely identical and interchangeable with each other, the distinction between transporting information about a particle and transporting the particle itself perhaps becomes non-physical; just mathematical semantics; two sets of terminology describing the same physical phenomenon.Yes, but note that in quantum teleportation the only thing that is teleported is information, not matter or energy. So it's more accurate to say that there is quantum information teleportation.
I think the interesting point raised by Greta's quote from Brian Greene is when he proposes that any act which is capable of measuring the characteristics of a system (like a human being) precisely enough to copy it must, by necessity, destroy it. This sounds a little like the observation about the infamous twin-slit experiment as applied to electrons: any measurement capable of discovering which slit the electron passes through necessarily disturbs its motion to such an extent that the interference pattern is destroyed (or something roughly like that.)
I think this makes the imaginary ethical question about the rights of the person who is copied and then destroyed even more intractable and interesting. Suppose (as is possible, although staggeringly improbable) every particle in your body simultaneously found itself, through the natural mechanism of quantum tunnelling, suddenly transported to a different location in space, would we regard it as physically the same as the kinds of teleporting mechanism we've been discussing here? The quantum mechanical concepts involved are essentially the same. If so, then are we justified in regarding an original "you" as having been destroyed at the old location and a new "you" as having been created at the new location? If so, is quantum mechanics a mass murderer?
I'm being a bit facetious of course, but I think this does once again play into this strange sense of continuous personal identity that we humans seem to possess. If I were to instantly kill you and utterly destroy your physical presence in such a way that you were completely unaware of it, I assume most people would still regard this as a terrible crime. And yet, there are many senses in which this is happening all the time quite naturally.