The whole shebang about belief in any religion, the so-called faith is the terror of dying and no afterlife. Most people are quiet easy to be persuaded in something to believe in that assures them that death and suffering for their god is rewarded with everlasting life. They don't want to hear anything or anybody burst their delusional bubble. Actually, I wouldn't bet that atheism is not that much in the minority in the world. I don't blame the people who are brainwashed by this false hope. I blame the leaders who are educated and know damn well they're preaching lies.
I think the people that admit to being atheist and returning to these faiths are really still atheist but are persuaded by the powers that be have convinced them that it would be better for all if they kept quiet and go along.
I was in rehab with the VA and had to go along with the higher power bullshit. I just kept quiet just to have a place to live. I was alcoholic, homeless, and found out I had congestive heart failure. I'm now on VA disability from my service in the Marines in Vietnam. There are times when I have to hold my tongue. I'm no martyr. Some of us atheist can't divulge our disbelief. It's kinda like being a jew in nazi germany to be a confessed atheist in Mississippi.