The article mentions how ones after tragedy can use this evil as their reason to be atheists; however, also, ones can keep on believing religious things, "intellectually", but they live as "practical atheists" >
What I think of with this is how a human can tend to be mainly concerned about oneself and how things are going for people who are close to him or her. This is a human tendency, in general. So, yes I can see how someone who has been hurt can be a Christian in theory but unforgiving and losing ability to have hope because of things going against the person.
But this can happen, even if the "trouble" is only how one is not getting one's treasure pleasures. Ones have even done major crimes when they found out they were being effectively interfered with so they were not getting the pleasure they treasure.
So - - with or without a tragedy, someone mainly about oneself can lose hope and even suffer deeply in unforgiveness. But one might hold on to the Christian label, for purposes which suit the person.
And one thing which is happening is the person is allowing treasured things and love idols to have power over him or her, so that changes in those things can cause changes in the person.
"I will not be brought under the power of any," Paul says in 1 Corinthians 6:12. And in 2 Corinthians 6:12 he says "you are restricted by your own affections."
So, yes whatever or whoever we are mainly attached to can be what or who decides what happens to us.