You're right that it doesn't change anything as far as our day to day experience goes. Neither would the concept of a spherical earth have changed people's day to day experience in the 6th century BCE. Also, in practice, it changes very little of our current science. As far as pragmatic physics it doesn't 'matter' if matter is virtual or actual.
The only things different in science are some areas of theoretical physics. You don't need string theory with this because it explains how we get the world of everyday objects out of QM. But that is fine because they have been working on string theory for about 20 years now and getting nowhere with it. There is also no need to posit parallel earths or doppelgangers in order to explain QM, which is a good thing.
I am not very well versed when it comes to these scientific matters, admittedly.
I think it has implications when it comes to traditionally spiritual matters so that's different. Survival of the mind upon death becomes possible whereas with a physicalist model it's not.
You are not going to retain much of the mind either way.
The one we're experiencing.
Yes, sure. I understood as much.

I was rather hoping for something ... more. Apparantly your thought processes (on which you based your argument to begin with) upon the 'outside' world. Regardless of whether this outside world is conceived of as matter, energy, physical, or data, or whatever.
I agree that we have no (scientifically reproducible) evidence that the mind can exist without a brain. However, when you have information rather than matter as the ground of all being it makes it possible.
Why couldn't there an equally good (or bad, depending on PoV) case be made for the mind existing without a brain with 'matter' as the ground of all being? (Keep in mind that these are pretty much just labels tucked onto what we have ultimately no clue about.)
My argument has always been that Afterlife isn't impossible, not that Afterlife is true. The reason it's possible is because the mind and the brain are both made of ones and zeroes. So death can be leaving part of your data behind rather than the end of your existence.
This is pretty abstract. What's up with 'life' in Afterlife being in italics? Are you saying the word Afterlife is a misnomer? If so is "continuation of the mind upon death" acceptable to refer to that philosophical concept? Afterlife is catchier.
I just put 'life' in afterlife in italics to emphasize it. It seems to have worked.
However, part of the problem that I always see is that there does not seem to be such an awful lot left of the mind after death. Thinking power is gone, perception is gone, memories are gone. And again it is pretty irrelevant whether you think reality as being made up of matter, energy, data, butterfly dreams, or whatever. Death does indicate a change of state somewhere within this matter/data/whatever. Any which way you conceive of things.
Except maybe you have some other ideas what life and death mean.
(And sorry, I haven't been following the rest of this thread.)