Thanks for sharing, very interesting read (for someone who was born too late to witness this zeitgeist of blooming demoscene, underground zines, VXing &c).
Not a write up but BBS: The Documentary is covers a lot of what you’re asking about.
BBS: The Documentary (commonly referred to as BBS Documentary) is a 3-disc, 8-episode documentary about the subculture born from the creation of the bulletin board system (BBS) filmed by computer historian Jason Scott of textfiles.com.
Can anyone recommend similar writeups?