He runs this website which claims that CO2 doesn’t cause global warming: https://globalwarmingsolved.com/faq/#physics. Calling him anything more than a crank is extremely generous
Here's an interesting discussion of the problem of "cognitive fluency". In brief, if it takes effort to evaluate the evidence properly, there is a tendency to dismiss it. It's easier to reassure ourselves that we already know than to investigate the question properly. A pitfall for the unwary.
https://firstdraftnews.org/latest/the-psychology-of-misinfor...
Have you read the welcome page?
"The most important principle on HN, though, is to make thoughtful comments. Thoughtful in both senses: civil and substantial." ...
"What we especially discourage are comments that are empty and negative—comments that are mere name-calling."