Finding and creating links while creating evergreen notes help us better think of concepts and ideas. “It creates pressure to think carefully about how ideas relate to each other” (see Evergreen notes should be concept-oriented).
Moreover, creating connections forces us to write, update and review previously written notes which Andy Matuschak says it approximates to spaced repetition.
References
Evergreen notes should be densely linked. [Online]. Available at: https://notes.andymatuschak.org/zF8xCU4BwXwbmSyp7tmff9i [Accessed 1 May 2025].