I think it's mostly a semantic argument: nothing is being "teleported", it's a copy. That copy will surely be a perfect copy of me at time T, and after T we'll drift and become different folks, but a copy of me is not me, and if you punch the copy it doesn't hurt me. SOMA showcases it pretty well! Anything else cannot even be conceived, right? And even if matter could be "transported" FTL into a different place, wouldn't the "zipping" process destroy me? The silver cord would be cut, and even if the person on the other side wakes up feeling like me, I would already be gone. It's consciousness and the vessel for consciousness, not one or the other.