One probably important distinction is that the Voynich manuscript was deliberately obfuscated. Puzzling it out requires context that may not even exist anymore (consider discovering an intact TLS log a thousand years in the future, without the private cert you'd never know it was just someone posting to HN!).

The notes in the linked article are presumptively-legible notes made in good faith, just not with enough detail for someone-who-is-not-the-author to understand . AI training sets are much broader than mere human intuition now.