Not nutters mate, just people who are very passionate about an issue where both sides think they're morally correct. All we can ask is that they try their best to talk as they would if they were in a pub with a guy they were mates with.
My old man many years taught me something in the local Working Men's Club. I was about 18 and this massive fat wanker in his 40s who thought he was Giant Haystacks was an aggressive gobshite giving it out. Long story short, we disagreed and as an 18 year old who obviously was Tyson, Mayweather and Gracie put together in my head then I squared up and the old man pulled me back and the memorable words. "Mate, he thinks he's right". Learned a lesson that day.
Mainly that my old man could gaslight me into not taking on unwinnable fights. But no, they think they're right. That's just the end of it now. Can't progress anywhere positive from it.
When I think I'm right, I'm a proper **** about it. Can't argue with me. Same idea here.