That's an interesting take.

Let's confine the statement to the bounds of a materialist's reality for a moment and see how it holds up.

A child somewhere in the world just had their arms blown off withnessing their mother and father evaporating before their eyes. In the mind of this child, is it in: a) normal Earth life b) heavenly Earth life c) hellish Earth life

A woman somewhere just discovered their partner has been cheating on them with just about everything that moves, and they have HIV. She has always been loyal for all the many years they've been together. In the mind of this woman, is she in: a) normal Earth life b) heavenly Earth life c) hellish Earth life

A soldier somewhere just fired on a little kid they mistook for an enemy. They go to sleep that night haunted by what they've done, finally realizing they are the bad guys and everything they are is a lie. They've done unspeakable horrors to so many innocent people, and it is all rising to awareness. Is this solder's mind in: a) normal Earth life b) heavenly Earth life c) hellish Earth life

Heaven and hell are manifested here in Earth within the hearts of all beings.