So, would it be better to leave all the isolated tribes around the planet today, and such communities, whose members haven't heard of your religion's dogma, to live their lives as they see fit, so that they may use the claim of this 'innocent ignorance' as you mention, which guarantees their salvation?
Such people and communities do exist today, Betty Boop, no matter how much you may wish to think they do not. They are no "alienated" post-modern humans, but real, living, walking, talking tribals who haven't heard your dogma.
The question I asked has implication in this very present world, as much as it is philosophical. If this 'innocent ignorance' guarantees salvation as compared to being aware of dogma and then being forced to obey it as a pre-condition to salvation, the ignorance route would have a stronger guarantee of said salvation.
Jeepers, JCB, I strongly doubt that such a question/opportunity could even occur to their minds. Thus there would be no basis for such a "claim."
Forget about "guarantees" re: salvation. Every man is on his own there; for God judges souls, not societies, communities, tribes.