That's a little problematic. People existed all over the world for centuries after the crucifixion and resurrection without any knowledge Christ existed. According to this, they're damned for no other reason than geography and ignorance.
So man, from his temporal perspective, might reason.
They carried the sin of Adam.
That's exactly true; or you find the way to reconcile that with scripture...
If you were conversing with the apostle Paul, how might he address your concern?
Romans 1:
18 The wrath of God is being revealed from heaven against all the godlessness and wickedness of people, who suppress the truth by their wickedness, 19 since what may be known about God is plain to them, because God has made it plain to them. 20 For since the creation of the world God’s invisible qualities—his eternal power and divine nature—have been clearly seen, being understood from what has been made, so that people are without excuse. 21 For although they knew God, they neither glorified him as God nor gave thanks to him, but their thinking became futile and their foolish hearts were darkened. 22 Although they claimed to be wise, they became fools 23 and exchanged the glory of the immortal God for images made to look like a mortal human being and birds and animals and reptiles.
So...Paul essentially says here that what was evident about God...His eternal power & a divine nature rising above the deified birds, animals & reptiles around them...was suppressed by people who refused to glorify & give Him thanks...choosing emptiness, darkness, false divine images, & Paul goes on to include deviant sexual practices like homosexuality.
Doesn't sound like neutrality toward God to me.
Sounds more like open idolatry, "wickedness" (as Paul puts it), etc.