You tell me! It's completely up to you how you share all of your work. Whenever you make a new post, you have the option to make each post patron only, public, or specify which set of patrons have access (i.e $5+ patrons only).
We encourage creators to keep the majority of their work public so more and more people can find your work, become a fan and then hopefully become a patron! Our Data Science team has even done research into this and determined that creators who create more public posts end up being more successful than those who post more paid posts (number 3 in this post on our blog).