It's fascinating and scary at the same time. It's what happens when you do motivated thinking for decades. He believes in all the alt-right crap about "gender ideology", "fake climate change", "fake pandemic", etc. He just completely ignores any data that contradicts what he thinks.
In middle school he "just" disliked gays and was pretty normal overall. Now there's no subject on which you can talk with him without some batshit insane views.
A big part of this is splinters of American culture war that spreads over the rest of the world as a side-effect. I can understand why some people in US think cancel culture and wokeness went too far. But then you have people repeating the same "antiwoke" alt-right points imported from USA in countries where you go to jail for criticizing Catholic Church and president together with main bishop go on anti-gay hate campaigns on state TV. And somehow it's still the alt-right that fights for "free speech", when they have no problem with "go to jail for blasphemy" laws.
Once you buy into this culture war and decide you're on one side - you interpret all new data accordingly. So you cannot believe in climate change, cause that's what leftists do. So if you see climate change - it's because NWO causes it with contrails. Trump is your guy cause he hates gays. So if he does things that benefit Russia - it's his brilliant plan to deal with Putin that you simply can't understand yet.
Always add more hidden variables that make your worldview consistent.