To me the issue lies with the person who steps into a teleporter and stops existing, not the one that walks out on the other side. If anything, if the cloned person retained their memory it would probably make them feel better about this whole thing.

As for the original person, they would lose consciousness as their bodies are being disassembled… and then what exactly? It feels like there’s a missing step between Person A losing consciousness and Person A’ waking up.

Though I guess you experience something similar every time you fall asleep, and personally it doesn’t feel much like dying.

Yes, and in neither case would you experience your consciousness being moved to a new body (which is what the commenter above seems to suggest). Your current “you” would be annihilated or just continue to exist in your old body.

Alright, but now instead of disintegrating and reconstructing, consider if a similar machine just duplicated your body atom for atom. Is that “you”, or a clone?

Could also be that they have a spin of ½ so you need to rotate them by 720° to get back to their original orientation.