> I don’t really like the idea of blaming others for one’s lack of curiosity about a subject. There are a lot of factors that determine how receptive we are to learning something - current interests, life experience, how developed our brains are, etc

I've met former classmates who got interested in a subject later in life and literally would not believe that the subject had been taught to us in an interesting way in high school. They insisted "I would have loved the subject if they had taught us topic X" or "I would have loved the subject if they had taught us from angle Y" when that is exactly the way our high school teacher taught us. I think when we think back to age 15 we have a hard time remembering how different we were, and we remember things in a way that makes our emotions at the time make sense through our current way of experiencing things.