I have two elementary-aged children, a boy and a girl. They fit the pattern you describe to a T, and I think most teachers' experience would agree.
So anecdotally, the theory that (in general) boys need more nudging than girls from someone in their life in order to be successful rings true. But what would account for a modern change? Are there fewer people pushing, now? Are boys more resistant to it now, or maybe more distracted? Are expectations of boys different now than they were in the past?
Although your reply is buried beneath a lot other comments, I do think you are right on this! People that prefer book learning and listening (passively) to a teacher have an advantage with the current teaching methodologies than people that prefer hands-on learning..
> Are boys more resistant to it now, or maybe more distracted?
Or perhaps parents are more distracted. Much has been made of how our digital age has made us, as individuals, more distracted and less connected to individuals in our life. For a parent, it doesn't seem unlikely that that would translate to being less invested in their child, or at least not as proactive in this kind of nudging.
So anecdotally, the theory that (in general) boys need more nudging than girls from someone in their life in order to be successful rings true. But what would account for a modern change? Are there fewer people pushing, now? Are boys more resistant to it now, or maybe more distracted? Are expectations of boys different now than they were in the past?