1. The highlight demonstrates, again, that you are assuming the consequent.
2. Your internal logic is broken. Let me demonstrate using your premise. Letters represent people
Long Ago
One infinite pool of selves
A & B (the first people)
Self[superscript]A[/superscript] and Self[superscript]B[/superscript] attach
C, D & E are born
Self[superscript]C[/superscript], Self[superscript]D[/superscript] and Self[superscript]E[/superscript] attach
A & B die
Self[superscript]A[/superscript] and Self[superscript]B[/superscript] go ....... where? Back to the pool of infinite selves?
Fast Forward to X, Y and Z
Self[superscript]A[/superscript] attaches to X
How does it also attach to Y and Z?
For your multiple Napoleons today you have to posit not only that their are infinite selves but that the selves bi-located or tri-located.