That’s an easy thing to measure, but that doesn’t make it a good measure.
A note is valuable when it aids your thinking, problem solving, recall, etc. How many times you visit it is irrelevant. Some of my most valuable notes were ones I visited once or twice. Some were valuable because I just wrote it down; that was enough to aid my memory or thinking.
Proxy metrics are more harmful than the worst data-hoarding habits. See: JIRA