Conversely, only publish notes that have a tag of #publish or similar.
This seems preferable as a note is never published until the user explicitly tags the note as publishable.
This could grow into an entire set of features over time, e.g. compound filters that publish notes matching a tags in the set {…} [AND|OR] notes in a specific set of folders, etc.
I find that currently, Obsidian still doesn’t support filtering notes for publishing based on tags, such as publish and #private.
My method of organizing and managing notes involves using MOCs and tags, rather than categories (except attachments). However, Obsidian Publish currently only allows filtering of files to be published based on categories, which doesn’t meet my needs.
I would definitely pay for the publishing capability if it were available. I hope the developers can implement this feature.