I'm not sure on this one - surely they're just advocating calling children it instead of he or she, which seems a bit cruel. I can understand the reasoning behind it, but don't think it will make a blind bit of difference. Surely even a child with a gender-neutral name brought up by the sort of parents who buy toys strictly according to gender is still going to have a sexist upbringing? There are some distinctly odd gender-neutral names amongst sleb children that won't stop the girls being raised as little princesses (ugh) and the boys as mini machos.
I was lucky - and unusual - in that I was always bought construction toys along with the dolls, and I always made sure that my two daughters had lots of the same. I loved my Bako, Nelliemoser! My eldest got a Fisher Price garage for her second birthday and both my girls loved it. My son, being the youngest, was surrounded by both "boys'" and "girls'" toys by default. Both my GS play with toy kitchens and the like. I certainly don't deny that there are differences on the whole with how boys and girls use their toys, but I hate to see them labelled for one gender or the other, and think addressing that issue is so much more important than what pronoun we use to address a child. Did the specifically labelled "boy" and "girl" aisles in toy shops actually happen back in the '80s, as I don't recall it?