Yup. I was reading one of them and I was like wow. It kind of makes me wish I had experienced that tech era in the early 90s, but I was only a toddler at the time. Today we have Tildes (https://tildeverse.org/) that try to resemble that old BBS community vibe.
In the first volume of the BBS magazine I have available there, I was surprised with how many women were involved in the BBS scene. There were at least three women who were column authors in that issue and one woman on the BBS development team (they have a photo in the beginning of the issue). I'm sure they had to contend with even worse casual sexism and misogyny in those communities than there is today. Nowadays it seems like more men are aware of the sexism we've internalized and are trying to be better.
I don't know if this will help you, but I wrote a tutorial on how to setup a local registry on the LAN on a Fedora Server or RHEL-compatible server. https://techne.hyperreal.coffee/tutorials/setup-a-lan-container-registry-with-podman-and-self-signed-certs/
But anyway, it's unlikely docker.io or quay.io or ghcr.io will go completely offline. If anything they might experience a DDoS, in which case I imagine they have competent devops employees who would ensure they become functional again within a matter of hours.