The pope is wrong. All atheists do go to hell. The bible is pretty clear on this point.
Other than that he seems to be doing OK so far. Needs to get the homosexuals out of the ministry
First circle.
That is hell.
However. The Pope's point was, we are all commanded to do good and avoid evil, and, lo and behold, we meet each other by doing good and avoiding evil. The point of "meeting" can be the point of "conversion." Eyes are opened. Hearts are opened. The soul, under the influence of Grace, acknowledges the need for Grace. And the Good Lord enters in.
That's what Pope Francis was telling the atheists. Not that they or anybody else has a "Get Out Of Hell Free" card, but that we meet each other at the point of doing good together, and that may prepare the heart for that moment of grace.
What if at the last moment they choose Christ?