“Going to Heaven” means spending eternity with your God. Satan is the God of this World, and this Pope, so he is correct. Atheists will spend eternity in the Eternal Lake of Fire with Satan, the God of this world.
Ahteists don’t care about going to Heaven because they don’t believe in it. They think when you die you go in the ground and the worms eat your eyeballs and that’s as good as it gets.