Whatever their "idea" is, is infallible. Minds cannot be changed with logic or debate when clearly wrong/false.
A belief is unbreakable if the person holding it wishes it to be so. Discussing such topics over the internet will never lead to yielding any ground.
Perhaps at the core of it is the fear of being rejected or wrong. Or that their world as they know it is crumbling and keeping it together is of the highest requirement + cost.
I keep hope for these discussions in that people can change. As cheesy as it is to say, I've only seen people really change when it's with love. That we reach out the other side and simply love the person first. Daryl Davis is my hero on this[0].
Unrealistic in a forum about cryptographic schemes, but it hurts for me to read the circles the author plays himself into.