If you were to make that analogy, I would think of it as the other way around...
You have to join a Bubble to receive the posts from it... you can't follow a user "at whole" unless you do it on twitter.
So it's a more direct relationship, your sharing with x people in the y something bubble... but they specifically joined that bubble because they only want to know about the "y something"
Also the people joined in the Bubble can post, it's not only the person who starts the Bubble.
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[ 0.27 ms ] story [ 14.9 ms ] threadYou have to join a Bubble to receive the posts from it... you can't follow a user "at whole" unless you do it on twitter.
So it's a more direct relationship, your sharing with x people in the y something bubble... but they specifically joined that bubble because they only want to know about the "y something"
Also the people joined in the Bubble can post, it's not only the person who starts the Bubble.
Let me know your thoughts!