People like the wikkan who make claims like that, in my experience, have always been delusional or insane. My own mother, for example, suffers from mental illness. She is schizophrenic, among other things. The last time I spoke to her more than 10 years ago, she was having active hallucinations in which alien craft were landing in her back yard and their passengers were having conversations with her. She described the landing itself as looking like a big fire lighting up the sky. It reminded me of Ezekiel.
The issue with the sense of time is interesting. It comes across as the way Time is perceived in dreams. It is either imminent, has just happened, or is happening. Anyway, it's all just for fun.
What you are seeing is a normal reaction to life-and-death situation being dismissed as a conspiracy. I agree that being nasty isn't a good way to react and that conversation and discussing facts is better. Properly understanding AGW requires some basic knowledge of science including chemistry and atmospheric chemistry as well as a basic understanding of data collection and analysis methods. Making it even more confusing for most people is that AGW has become a political issue. It's as thought voting can make it real or a conspiracy. That and an understanding of how much academic scientists for the IPCC are paid versus commercial scientists working for the Koch brothers are paid. And you must understand how science funding really works. So, what you often see when people argue about global warming is that both sides have strong opinions but neither side can really explain the science for or against AGW. Then people keep coming up with charts from who knows where, and it takes time to go over it, check the sources, and say why the data in the chart is good or bad. Even then, when one side is knowledgeable and the other isn't, it's useless to talk about because of the education gap. Try explaining something basic about the science (like why infrared radiation is referred to as 'heat radiation' and why CO2 molecules absorb infrared light but not visible light) to somebody who doesn't know anything about it and you see the lost look on their face. The exceptions are those who have taken the time to learn about it. It's a complex topic, and it's not easy.
Many people don't believe something is real until they experience it first hand, especially those who are poorly educated. So it's kind of sad that one of the few places in the world that's actually getting colder winters is the North American midwest, northeast, and norther plains regions. Most of the rest of the world is getting significantly warming, and the people who live in those regions are seeing it first hand. Maybe more people will believe after reading about commercial shipping through the Arctic Ocean and about illegal aliens landing on Canada's Arctic coast.