Example of someone not using the system as it may have been intended. Visiting one's notes on a somewhat frequent basis should be part of one's regular practice.
If you're not doing anything with what you read, why are you reading it? Similarly, if you're not doing anything with your notes, why bother taking them?
Naturally, creating notes certainly has a valuable use for learning, but to get the most out of them revisiting and linking them has other value, based on one's need.
Missing in this article is a specific use case for why the writer is taking notes at all.