So I found another plot hole involving Agents of S.H.I.E.L.D, except this time it also involves Runaways.
So the first appearance of the Darkhold in the MCU was in Agents of S.H.I.E.L.D. Season 4. One thing that was learned about the Darkhold is that the pages are seen differently by each person. To anyone reading the book, it shows the answer to what they wish for, but anyone who isn't reading the book sees it as blank. By this logic, any digital recordings of the book would also appear blank.
Here comes the plot hole.
In Season 3 of Runaways, Robert Minoru finds Morgan le Fay's copy of the Darkhold and reads it. Knowing that Morgan will kill him, he uses his WizGlass to record the book.
Given that the contents of the book are only seen by the reader, his WizGlass should have just seen blank pages. So why is it that his glasses could record the book's contents but other recordings saw blank pages?