I can only speak for myself, but the anonymity of this forum was what made me feel safe to post my situation. And while the ideas being floated do not end anonymity for those that don't want it ended, I do think the anonymity of the forum is one of its foundational strengths.
I also agree with Andrew, this is the internet. And there are those lurking about that will gladly try to take advantage of others. I look at some of our posters that would be very susceptible to someone swooping in and acting like the hero in their life, and being open to the ulterior-motives of the "hero" is something someone going through a rough patch might take advantage of.
I was part of two other forums. One in 2005 in my first sitch. And people who didn't like what others posted actually were able to find out who they were a dox them. One poster I was close to had to eventually return with a completely different screen name due to being doxxed.
In another forum I was on before coming to this one, it was group on an IM app. I forget which one, but it turned out to be a meat-market. I had one woman that wanted to meet me and take care of my needs. When that made my uncomfortable and I left the group, she added me back to the group and said something like "OH no you don't, you don't get to get away that easy!" I left the group and deleted the app.
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018