We have close to 19k members but many of those are duplicate or spammers. According to the system, just over 5,000 users have interacted with the community by creating content. Most people who create an account never do anything with it.
The software stats are wildly inaccurate. We definitely have never had 49k users online. The most I've seen active at once is around 3,500, IIRC. Pretty sure that was the first round of a draft, can't remember which one.