I'll note also that intuitively, the two instances of me will have more in common with each other than with me the day before ... but they immediately diverge, and won't remerge, so I think that each would intuit the other as its near-identical twin but nevertheless a different person, rather than the same "I".

If remerging was a thing that could happen, that would I think break the intuition.

(I haven't looked, but I would be surprised if this hadn't been covered in the endless discussions on the subject on Extropians in the 1990s that Eliezer notes as the origin of his viewpoint.)