It's called an unknown unknown.
It's like if you get home and drink all the milk in the house, even though you've previously said you don't like milk. Then an hour later when your mom gets home, you ask if she got any milk. Of course she says no, but you still get upset. You could say she should have called to ask if you needed milk, but why would she have done that if she had no idea you would drink all the milk.
People don't know to ask questions about things they don't know about.
That being said, I get what you mean. I think this guy probably knows somewhat about the things they said. But I also don't think it's worth getting on his case for very long about. I'd if he's a 16 year old or a 50 year old guy, if he lives in America or Japan. For all we know he might live in a place that has a completely different veiw of these subjects. Still, if he's going to open himself up to discuss this stuff he should be prepared for what comes of his choice of words regardless.
I'm starting to rant lol. I'm neutral at this point.
