npub1py3el78aptr48n3ttqfs2vrsqerx2m26tway9euj9s2z48fu7jrs8rdszx (npub1py3…dszx) btw, if your question is "who can see my posts" the answer is. The 14 people who follow you. Plus any user on theres.life that looks at the local timeline and any user that is on the same instance as someone who follows you and searches for a hashtag that is in your post.
IMHO the federated server model (fediverse ) works best for users who want a good relationship with a few posters.
For a weak relationship with many people the monolithic server model works best (eg: X).