Some people are simply self destructive, self loathing or are of the mentality that "If I had to suffer this why should others be spared it."
If this seems improbable bare in mind that
One of the most horrific things in the study of modern history was that there was a regiment of the German SS during World War 2 made up Jewish descended people who had one or more Hebrew grandparents and who would therefore of gone to the camps by law, yet who as card carrying Nazis were spared this in order to persecute and execute their own families and those like them.
To see how destructive xians can be, see Catherine Nixey’s The Darkening Age: The Christian Destruction of the Classical World. She says little of the story is known outside academic circles because in “a spasm of destruction never seen before” the Church destroyed what was not Christian.
Indeed, Ernst is a dangerous religious extremist who believes citizens should depend on churches, not government, for assistance.
That’s a bit OT but I have a conservative friend (also a Trump supporter) who isn’t a religious extremist at all, and believes this. I wonder where that mindset comes from.