I think the point here is that Lego is fondly remembered as -- and maybe even should be -- a gender-neutral toy. There was never anything inherently male or female about Legos. In fact, I remember playing with my younger sister often -- I'd be building a spaceship on one side, and she'd be putting together a house on the other.
The problem is that Lego has gotten away from being a gender-neutral toy and is now marketed specifically to boys. And the travesty is, they've dug themselves such a deep hole that the only way to get back any female users is to pander to their lowest common denominator.
It's not marketed specifically to boys though... Sure, some of the sets are obviously more male-oriented (perhaps even the majority), but there are also sets that are either specifically designed to appeal to girls, or which appeal more to girls for whatever reason.
This trend is really nothing new, either. More than 20 years ago I wanted the Lego spaceships, and my sister got pissed off at me for making wars against her happy little Lego town people. Even 20 years ago there were more sets that appealed to boys than girls, I'm reasonably sure.
We also had a pile of the plain old "gender-neutral" bricks, which either of us might have employed to augment our various constructions.
The problem is that Lego has gotten away from being a gender-neutral toy and is now marketed specifically to boys. And the travesty is, they've dug themselves such a deep hole that the only way to get back any female users is to pander to their lowest common denominator.