It may just be the writer's style, or the thickheadedness of the "researchers" but "spirituality" comes across as some kind of mental trick that can be made to "work".
Like tone deaf people teaching other tone deaf people how to sing. Give them points for trying, but the discussion sounds a little stilted to me.
This goes on for a bit, with clever parroting of modern secular humanist arguments against the spiritual world (it's obviously inspired by Plato's Cave). But in the end, the children fight back and one declares, "You may be right that there is no world outside of this cave. Perhaps there is no sky. Perhaps there is no sun. Perhaps, there is even no Aslan the great lion who redeems humanity. But I will still believe in those things. Because that world, even if false, offers me far more than anything you can offer me in this pitiful, dark, meaningless world that means so much to you."
Funny, it does the same thing for completely healthy people as well.
That's because assurance of eternal life can come at any point, even up to the very point of death.