Perhaps he chose the “god is good” over the “god, despite being able, will not prevent billions of reasonable and decent people from suffering eternally” fork in the road. You can’t logically choose both, and if you’re the pope, you probably had better have a belief in the goodness of god.
There is an older stream of christian thought on heaven and hell, still somewhat present in eastern christianity, that they are not separate places people are sent to.
In this view they are the same thing, simply the direct experience of the unattenuated light of god. A repentant person will experience this as mercy and all encompassing love, an unrepentant one will experience it as excruciating shame and terror. But they are both getting the same "treatment" so to speak.