First of all, I didn’t know that you can edit posts, thanks for that headsup :)
Secondly, you gave a thought experiment and I gave you my thoughts why I think that particular conclusion of yours is wrong. That doesn’t mean that I’m automatically right and/or that you should immediately changed your texts, because the point I was trying to make is that not even science has the definitive answer to that question. I don’t think that they will get a definitive answer to that question in our lifetime, most probably not even in the lifetime of our greatgrandchildrens. Maybe even never would a definitive answer be possible (on if consciousness immortality is possible) because of the triggers it can do to our own timeline, as you put it.
Interesting would be if people get to the point that they can “upload” your consciousness into a machine/the internet and let it “live” forever on there. Because would that really be the same, or will that just be a way to encarcerate our consciousness forever? And would that upload be a true “cut-paste” or just a “copy-paste”?
So, in essence, I wouldn’t call your point of view of “if we’re immortal” a problem and/or something that you should fix. It’s just something that I cannot fully agree with in the context you’ve given us before.