There are many questions: How did he confirm that he is a quantum copy? How did he confirm that his memories after death are real? How did he confirm that every person goes to that place? If this is so then how did he confirm that when a human ceases to be a human it does not lead to pseudo-death and getting to the island? How did he confirm that other creatures, in particular his creations, do not have an analogue of the island? How could his followers manipulate probabilities on such an absurd scale? For the record, the appearance of an exact quantum copy of Ion within the Earth's bubble of causality is essentially infinitely improbable. Again, judging by his own words, the reality of his memory of life on the island is absolutely impossible to confirm.