Is that true that everything is transparent? That is an actual question by the way. I know memos can be encrypted by adding # in front of it so only the recipient can interpret it.

Could posts and comments be encrypted so only members can decipher the encryption and read the contents of the post? This way people could have private communities but everything gets kept on the chain. For instance, witnesses could have a community but only active witnesses could view the posts. This would help remove reliance on third parties such as discord which fragments the community.

To me this approach would open up a cool new door because it would allow for small groups of friends to form communities. It would essentially allow for Facebook like functionality on the blockchain if I am thinking about it correctly.