What a load of bullshit. You cannot win an argument with facts and fact checking, when you're talking to someone who only believe their feelings and poor sources.

• “I’ve looked into this, and it’s actually been widely debunked. Would you be open to reading a source I trust?”
• “I know this feels true, but it’s coming from a site known for disinformation. Can I share why I’m concerned?”

I tried this many times, it doesn't work. All the fact checking sources I provide are considered false and left wing propaganda. The only source they trust is Fox / Facebook / racist neighbor / etc. If it's about science stuff, they know better than a professor in that field. They don't question their sources. They don't believe in facts and science, only in feelings. And their feelings were created by populist politicians, radical groups, fake news sites originating from Russia, etc. And when they have a feeling, there's no arguing with it anymore.

This goes for any cult member. And with cult I also mean the Christian churches, and any other religion. Anyone who blindly follows what is dictated to them by whoever they worship or follow.

I've seen a lot about cults. I think the only way to hopefully pull someone away from a cult is to isolate them from it, show the real world for a while, then talk about how their cult world is actually very far from normal and okay. This works only sometimes, some people get away from it, then to return a bit later. Or they fall for another cult.

But there's no arguing with someone who doesn't trust facts and doesn't use any form of logic.