There are few different type of links:
- Links to entire notes
[[SomeNote]] - Links to a heading/section of a note
[[SomeNote#Heading]] - Links to a block of a note
[[SomeNote#^blockid]] - (Not native: Implicit links using task queries from Dataview )
So there is no link directly to a smaller section within a note. If you want to have a piece of text referenced in multiple places, and somehow link to it, you do need to either have that text be a separate section, or a distinct block, or a note of itself.
In either case, you can use embeds to include that piece of text wherever you want. However, you can only edit that text where it’s defined, or through a pop up preview of that text.
Note refactor is aiding to do this by creating a new note with the important information, and it inserts a link which you can turn into an embed by prepending the link with !, so it becomes ![[SomeNote]] or similar.