Less than 4% of Archived Instagram Account Pages for the Disinformation Dozen are Replayable

We examined the archived Instagram account pages of the “Disinformation Dozen”, a group of anti-vaccine conspiracy theorists, along with account pages of a set of health authorities. In the Internet Archive, we found that a majority of the archived web pages, or mementos, are actually redirections to the Instagram login page, and of the remaining replayable mementos, many are missing post images. In our combined dataset, over 83% of the archived account pages redirected to the Instagram login page, due to Instagram's treatment of access by non-logged in users. For the Disinformation Dozen, 96.13% of their account page mementos redirect to the login page, and only 27.16% of the remaining replayable mementos contain every post image that was requested. Combined, these results reveal that merely 1.05% of mementos for the Disinformation Dozen account pages are replayable with complete post images. Furthermore, we found that the percentage of replayable mementos is decreasing over time, with a particular lack of replayable mementos for the years 2021 and 2022.