Look, I get you. I just think you are making the classic blunder of assuming people are literally born prone to being angry at the new neighbor.
What I am saying is that they are not, it is an enculturated behavior, that is again, rewarded and enforced through your life in this society. All culture, including right-wing culture, is learned and shared behavior, it just seems ‘more natural’ because it is what is rewarded in this society, and most people’s are far more interested in material outcomes than anything else. That is why that person went back to believing in shit, a single day of conversation is not going to change years of learned and reinforced behavior. Otherwise talk therapists would literally be miracle workers. It takes conscious effort for some people in this society to be leftwing. Some people just are like that. Again, facts may be a shield, but they are a weak shield, they may provide solace and comfort, but they do not provide a way to power or effective negotiation with it.
You can have facts, but obsession with facts shouldn’t define you, imo focusing instead on rewarding good social behavior around you, being open to communication and trustworthy is worth more than any single fact you can offer someone. We don’t fight anti-social behavior with facts, we fight it with demonstrating the real rewards, both mentally and emotionally, of pro-social behavior. I don’t know if this is revolutionary behavior, but I do think that, and patience helps a lot.
D&D now barely qualifies as math. There isn’t even any division. That said, really good at getting people to understand statistics.