You step into the teleporter, it scans you, and then you step out. I then shoot you in the head with a gun. The teleporter then reconstructs a copy of you. Do you really think that you, the person I just shot in the head and now is splattered all over the floor, gets to experience walking out of the teleporter as a copy? If you're still having trouble, imagine that the teleporter got stuck in a loop and kept outputting copies. Which one is you? Which one do you expect to "wake up" as at the other end of the process?

My current thought on the matter is that Ishaan0 stepped into the elevator, Ishaan1a stepped out of the elevator, and Ishaan1b was replicated by the elevator.

At time 2, Ishaan2a was shot, and Ishaan2b survived.

Ishaan0 -> ishaan1a --> ishaan2a just died.

Ishaan0 -> ishaan1b--->ishaan2b--->ishaan3b --->... gets to live on.

So Ishaan0 can be said to have survived, whereas ishaan1a has died.

Right now all we have is the fleeting experience of continued identity moment to moment

The way I see it, my past self is "dead" in every respect other than that my current self exists and contains memories of that past self.

I don't think there is anything fundamental saying we aught to be able to have "expectations" about our future subjective experiences, only "predictions" about the future.

Meaning, if ishaan0 had a blindfold on, then at time1 when I step out of the teleporter I would have memories which indicate that my current qualia qualify me to be in the position of either Ishaan1a or Ishaan1b. When I take my blindfold off, I find out which one I am.