Yes. It's looking a little bit abandoned, but there is more to it than that single URL.
Maybe a dozen small sites, globally, collecting 'recipes', and still very incomplete.
Partial overlap with hardcore refuseniks who prefer different init-systems, libc's and building whole mini-distros around other concepts. Starting and running f...ing fast.
Yes, in containers/VM's too.
Since you are a writer, you could create some nice stories about the different systems-universes, which could have been if only... ;-)
Which also could help with your PTSD regarding Btrfs, which you DO suffer from.
Lemme tell you why that is from my POV:
I didn't use it in it's early days. So whatever imperfections of its code and tools, or interactions with kernels/libraries of that time escaped me.
I tortured it by pulling the power plug of the systems it's running on multiple times, under different conditions. Like from mostly idling to extreme load. Dozens of times, meanwhile. Sometimes full to the brim. I'm using it on everything, ranging from internal SATA-SSD, NVME, and external disks(real rotating rust) even over f...ing USB2 with UASP. Even using some compression, no DEDUP or RAID though. Still nothing bad ever happened.
Maybe because I'm using it on a 'gaming-distro', often considered b0rkn by 'professionals? Shrug?
So whenever I'm seeing you rambling about that stuff, that's what you'll get from me:
Shrug?
(Until it happens to me, then I'll shout I repent! I repent! Such brazen foolishness of mine! Forgive my ignorance!)