All fake. In fact, it is a sign that their souls are so weak that they are in danger of being harvested by the angels at death. Such souls lack any character, and it is typical when people reach advanced stages of Christi-SCAM-ity. Whether they believe in it or not, they are headed for that place in the LIE-ble described as a cubic city with emerald green gems and infinitely bright light. Their fake-happiness is a sign that their souls will offer little or no resistance to joke-hova, who uses this "city" as a place to harvest souls. Damnation awaits them.
And yes, I have seen quite a few of those witlesses that displayed this sign. Many would have no depth, and gave comments in the words of the paragraph or threaded long personal experiences they had in field circus in their comments. They always pious-sneered despite health and age issues, threw 20 toilet paper bills in the Worldwide Pedophile Defense Fund boxes despite being poor, and seemed content at being poor. For many, they will be reincarnated poor. For the others, they will find themselves in heaven to be harvested, and that will be the end of the line for them.