I will try to explain my Absurdio ad Equus case later. I think I'll have to be more formal in that one.
Now. You see, when you proclaim that what makes every "Fork" of Consciousness as equal as your own, then you are necessarily objectifying yourself. You're saying that your own Subjective experience is meaningless or at least irrelevant, what matters is that there exists an equivalent one "anywhere" in the Universe. From an algebraic point of view, that is true. From a moral "consequentialist" point of view, that might even be a good thing. But the question was not posed in this "uncaring" "objective" manner. We might be "objects" from a scientific point of view, but that's not necessarily true in a complete sense, it's just true in an assumption basis: Science only deals with objects, science can only deal with objects. To then proclaim we are "just as objects as anything else" is not really a "scientific conclusion", but something that sparked from its very own design. And if you only have a hammer, then you will regard everything.. etc.
My problem is compounded here by the fact that you're not just "treating the brain as a physical system", you are treating it as a computer, and consciousness as a software program. There are two ways to tackle this opinion.
First the philosophical / metaphysical one. Basically, your viewpoint necessarily requires that we adopt a worldview wherein our consciousness is actually an illusion, that this "permanence of being" is a lie that our brain tells us, and that the only thing that exists is a very sudden "Ourselves" in the "Very Present" at all times, and that if you die and something else sufficiently similar to you appears elsewhere then that's fine because that person will exist by "HimSelf" in the "Very Present" at all times. We are continuously dying and birthing at every second. Metaphorically speaking.
You need something like this in order to believe that it's ok to kill yourself and be "cloned" at the far end of the planet. Let's bear in mind that this looks like redefining the word "Death" into something as vulgar and present in everyday life that we come to allow ourselves to Die in the teleportation process (newspeak? Just putting that out there). Now, regardless, we could accept this. You can believe that, but you cannot confuse this metaphysics with science. This is a definition of what human beings are and what consciousness is in absolutist terms, down to details that you cannot possibly know as far as we can tell.
And that comes to my second tackle. My problem here is that you are reducing the problem of consciousness to arbitrary conceptual building blocks that might have zero to do with how a comprehensive brain science model still to be made will describe them. Not just "might", but almost "assuredly so". I say this, and you retort with "it seems to be 'you're wrong because you aren't right.'", it's a lot deeper and simpler than that:
Science is conservative. This means that reality is inherently difficult to parse and all ideas we have about it are most assuredly wrong. Some wronger than others, but it's fairly certain that many paradigms are yet to be found, many new "metaphors" much more productive, efficient and explanatory are to be written into textbooks. But until that time comes, the immense number of possible metaphors and the ways we use them are wrong. Why do I say this? Because there is no engineering level of rigor in terms of testing any of these criterias, how each lever goes, what kind of influence patterns have, what does it mean to transfer a bit or a byte of consciousness, etc. This utter void means that all these metaphors are almost certainly wrong.
Now, we could say, "well, ok Luis, you're conservative, but this is the best I have it's what I'll go with, OK?", fine. But here's the problem, you're going well ahead with your ideas and drawing out far reaching conclusions without any known method of testing them. And not only that, you're so certain of them, you're even willing to die for them.
I find that over the top. You are indeed an atheist, but one filled with a lot of faith.