Is there even anybody claiming there is an experiential difference?
Yep! Ask someone with this view whether the current stream of consciousness continues from their pre-uploaded self to their post-uploaded self, like it continues when they pass through a doorway. The typical claim is some version of “this stream of consciousness will end, what comes next is only oblivion”, not “oh sure, the stream of consciousness is going to continue in the same way it always does, but I prefer not to use the English word ‘me’ to refer to the later parts of that stream of consciousness”.
This doesn’t show they believe there is a difference in experience. It can be simply a different analysis of the meaning of “the current stream of consciousness continuing”. That’s a semantic difference, not an empirical one.
This doesn’t show they believe there is a difference in experience. It can be simply a different analysis of the meaning of “the current stream of consciousness continuing”. That’s a semantic difference, not an empirical one.