Even internally, no, that still doesn't work. The evidence that your current continuity has observed is not influenced by whether or not rescue sims exist. That's the same thing as saying that you have seen no evidence one way or the other. Even if multiple other versions of you are instantiated in the future, what the continuity of yourself that is typing this observes doesn't change.
I don't think that's the right way to do Bayesian updating in the presence of observer-splitting.
Imagine I sell you a device that I claim to be a fair quantum coin. The first run of the device gives you 1000 heads in a row. You try again, and get another 1000 heads. You come back to my store to demand a refund, and I reply that my fair coin gives rise to many branches including this one, so you have nothing to complain about. Do you buy my explanation, or insist that the coin is defective?
What looks, at the moment, as the most feasible technology that can grant us immortality (e.g., mind uploading, cryonics)?
I posed this question to a fellow transhumanist and he argued that cryonics is the answer, but I failed to grasp his explanation. Besides, I am still struggling to learn the basics of science and transhumanism, so it would be great if you could shed some light on my question.