Maybe that's a natural evolution of forums?
I was on a very birthy forum prior to the birth of my second and the organization and forum was pretty hardcore about the mission (decreasing c-sections) and supporting moms. There were lots of really smart ladies on there and lots of new moms coming for support. There was much to discuss and learn. Really cool and amazing things happened. We compiled data and proved that the community had achieved an admirable c-section rate in spite of having a group comprised of some of the least favorable candidates. Our group, with hundreds of births, was larger than most of those we found in published scientific studies and contained some really rare categories (two VBAC triplet births, for instance).
Over time, though, it became more of a social network for local moms rather than a support network for expectant moms. The off topic stuff mushroomed and on topic stuff seemed played out. Fewer moms posted for advice. Perhaps the birth community in the area had improved to the point it wasn't as necessary. Perhaps new visitors felt they weren't part of the "friends group" and didn't stick around. From the peak of hundreds of active posters (remember, this was a group for a specific metro area), they're down to a couple of dozen at best.
I will say that as a fairly new member of this forum, the sheer volume posts can be intimidating. It's hard to keep up with or contribute to a post that quickly gets dozens of responses. Though I'm not the type to spend $800 on a blender, I do think there's room for flexibility and less face punching if one is on track with their goals (one of my fav financial podcasts is "Afford Anything"). I mean, I asked for and received a 4' tall metal rooster for my birthday and it's probably the best gift I've ever gotten. But again, I'm not crying about a crushing debt load either, so there's that.
So now I've managed to refer to both vaginas and cocks in one post. You're welcome.