I think it is correct to view American Girl as a potent political force. They are more than just dolls. There are backstories to each doll, and lots of girls grow up reading the books and buying the videos.
Generally speaking, the books and stories are wholesome and life-affirming. But such a thing could be used as the ultimate under-the-radar way to influence young girls. Think of the way the Girl Scouts of America have been subverted over the years, and multiply that several times and you get the amount of damage that could be done if the Lefties ever get ahold of American Girl.
The forces of traditional morality should flex their muscles early and often and watch this group very closely. We should support them when they do right and hit them where it hurts when they do wrong. They are like a puppy with a hand grenade. Cute, but dangerous.