With all due respect, I don't think you've understood the difference between redeemed and saved.
Let me give an analogy. A grandfather has several grandchildren. He says to all of them, "I have a present for you: would you like to receive a present?" (He may or may not have provided evidence that there are indeed presents to be given.) All the grandchildren but one say "yes, granddad!"... all but one. One says "no granddad, I do NOT want your present". The granddad then produces the presents and distributes them all, giving every grandchild a present aside from the one who refused.
The act of telling the grandchildren that they can have a present and would they like it, is akin to redemption. The presents are stated as being for all who accept them.
The act of accepting the present, is akin to being saved. You have to actively accept the present, in order to receive it. The fact that one child refused the present, does not negate the fact that it was offered in the first place.
This is off the top of my head and may not make the best sense. But basically the Pope said atheists are REDEEMED. He did NOT use the word saved. So that implies that all atheists can also receive the gift of salvation. However they have not accepted it (yet?!?!)
I believe the same as you but both Catholic doctrine and in this case, the Pope himself, are very clear on this. No atheists in Heaven
According to both, they are either in Purgatory or, more likely, Hell