I just read the article too! I was going to tell y'all about it, then noticed that Jane Darnell already had.  Next, I rushed over to Wikipedia and stuck an initial reference to it, right up top, as an additional source for the 2011 (under-)estimate of female editors, see here:
https://en.wikipedia.org/w/index.php?title=Gender_bias_on_Wikipedia&type=revision&diff=668016825&oldid=667483286

~Ellie (FeralOink)