There's been a claim on the forum that enthusiast women join the site at a reasonable rate, but they leave faster than men. I suspected this wasn't true, so I collected some data. I only looked at people within 300 miles of San Francisco or NYC who've been online in the past month.
I just looked at the date at which people joined. I expected the join date to be roughly the same for both men and women, but that wasn't what I found.
Among the 1308 men whose data I was able to collect, the median join date was September, 2019.
Among the 295 women whose data I was able to collect, the median join date was September, 2020 - a full year later.
So women's accounts are mostly much newer than men's, which does lend credence to the idea, but doesn't conclusively prove that they join at a reasonable rate.