If you are a naturalist or physicalist about humans—these copies are not me, they are my identical twins. If you want to go beyond naturalism or physicalism, that is perfectly fine, but based on our current understanding, these are identical twins of me and in no sense are they me. So whatever happens in these other universes—it is not going to be me going through the timeline, it will be my identical twin.
An infinite or very large universe/multiverse is highly speculative and no matter what I decide in this universe, if there is an infinite universe, it makes essentially no difference if all universes are the same. There is going to be 10^1000000 and far beyond that of my identical twins and I have no power to influence anything. To say that you can influence anything in that scenario is worse than saying that you can move earth to another galaxy by jumping on it. You have 0.00...0000...0001% effect on it, and in an infinite universe you have effectively zero effect on the fate of your copies—so no matter what you decide, you will not have any influence over it.
If you are a naturalist or physicalist about humans—these copies are not me, they are my identical twins. If you want to go beyond naturalism or physicalism, that is perfectly fine, but based on our current understanding, these are identical twins of me and in no sense are they me. So whatever happens in these other universes—it is not going to be me going through the timeline, it will be my identical twin.
An infinite or very large universe/multiverse is highly speculative and no matter what I decide in this universe, if there is an infinite universe, it makes essentially no difference if all universes are the same. There is going to be 10^1000000 and far beyond that of my identical twins and I have no power to influence anything. To say that you can influence anything in that scenario is worse than saying that you can move earth to another galaxy by jumping on it. You have 0.00...0000...0001% effect on it, and in an infinite universe you have effectively zero effect on the fate of your copies—so no matter what you decide, you will not have any influence over it.