It's for this very reason I'm so happy to see something like this article on HN, and I'm so happy to see your comment too.
I think I know exactly where you're coming from -- I was exactly the same way when I was younger. I was 100% extremely logical, and my emotional awareness was... exceedingly underdeveloped.
Long story short, I got into different artistic pursuits where I was forced to develop my emotional awareness of these things, multi-hour classes with other artists where all we'd do would be to analyze these types of things.
And after a long period of great frustration, all of a sudden, it's like the world went from black and white into color. There was emotional resonance everywhere where I hadn't seen it before. It was like I was finally speaking a language a lot of other people seemed to just be born with. And social interactions got a lot... easier.
I also realized that my emotional surroundings had always affected my mood etc., I just had never been able to pay attention to how. So while I was consciously blind to it, I was still subconsciously 100% affected.
So there's absolutely nothing "wrong" with the author's psyche... but nothing's "wrong" with yours either, you just haven't had the practice/opportunity to develop this side of things. You're not dissociating from reality... but at the same time there absolutely is a reality that you haven't developed skills to see. And it absolutely has nothing to do with age or country.
If it's a skill you want to develop, there's no single answer. The general idea of "emotional intelligence education" is one approach, fields like art history, film criticism, literature and poetry are others. Even activities like yoga and meditation can help since emotional awareness is both mental and bodily. Ultimately the more you expose yourself to things combined with seeing how other people respond to the same things and finding little pieces in common with them, it'll eventually start to "click".