What do you think about creating a private chat where people talk for meaning, not for the algorithm? 🔒
For example , you could create a doc in Cryptee or Proton Docs, share it with friends, and write inside it together.
No feed, no likes, no stress. Just talking
I've been using Obsidian recently. It allows for encrypted multi user vaults, and while designed for people like lawyers, it can be used as you describe. Unique feature of Obsidian is you can use the same data (or parts of it) inserted into multiple templates (eg: Bitcointalk investor, Gofundme, Kickstarter) personalized for the audience.