Imagine the machine makes one such perfect copy of you without successfully dismantling you. That person stands in front of you. Do you see through their eyes? No. If you die, do they die too? Of course not. It doesn’t matter how perfect the copy they are, they are not the same person as you. If the biological processes in your body end, you die. The you that steps into these teleportation machines never gets to see what happens on the other side of them.