Even if we „solved“ death and disease, accidents and wars would end our live eventually. Lifespan would increase for sure (I think there was a model that predicted sthg like 500 years?), but immortality just won’t work.
You are correct. A better word is amortality - a lifestyle that defies the process of aging.
I think the only way we get “true” immortality is memory transfer to silicon (or whatever is in-vogue at the time) barring all the gibberish about “souls” and “what does consciousness mean”. People like me who are materialistic and think we are chemistry and sensations manifest as consciousness. Assuming tech ever actually reaches that point, and probably not in our lifetimes. It's one reason I read all the Warhammer 40k novels about the Necrons. I know it's pulp fiction but is fun to ponder while daydreaming.
Correct. Eliminating aging doesn't mean immortality, it just means you don't have to watch your body and often your mind deteriorate over the course of several decades. It would still be extraordinarily valuable even if humans had unremovable biological time bombs that caused us to drop dead at 100 years regardless of our health.
the goal of lifespan extension would be extend it far enough that we 'd be able to move the conscious self to some other mechanical entity