Jailbroke my Kindle to use it as an e-ink monitor

Best RickRoll ever!

Independent of the methods indicated here (screen capture + imagemagick conversion), there's the underlying question of E-innk hardware capabilities. I can speak to the latter.

E-Ink screens are usually capable of a number of different refresh / display modes, which trade higher-quality visual appearance (crispness, greyscale, ghosting) for slower refresh.

Refresh rates typically range from ~2-4 Hz at highest quality to 16--60 Hz at lower quality, but faster-updating modes. For most E-ink devices I've seen there are typically four modes, "Normal/Regal" (highest quality), "Speed", "A2", and "X-Mode" (fastest refresh).

"Normal" is best for reading static text. "Speed" is sufficient for terminal-based sessions (I have Termux installed on my Onyx BOOX tablet), and most interactive apps (e.g., Web browsers, Podcast apps). I find little practical distinction between "Speed" and "A2". X-Mode does show considerale ghosting, but is indeed capable of video playback.

Typically it's also possible to set the full-refresh interval (now many repaints are premitted between full refreshes which clear ghosting but give a distinct "flash" update.

E-ink has a number of compromises, but is quite usable. Apps which are designed with its capabilities and limitations in mind are much better suited. Mostly that involves full-screen pagination of content rather than scrolling. Given the ubiquitous use of touch-based scrolling in most Mobile applications, this can be somewhat frustrating. I tend to use dedicated e-ink apps (such as Onyx's own NeoReader book reader), apps tuned for E-ink such as Einkbro, a Web browser, or terminal-based apps which work well in a text-based context.

I suspect it's less that the forum will change URLs as that the URLs listed within some arbitrary forum post will become outdated as the referenced source moves or is deleted.

Linkrot, in other words.

Documentation in Wiki-based formats is more resilient against this as posts can be subsequently edited.

The good news, maybe, is that "E-Paper" (transflective LCD displays), capable of much higher refresh rates (60 -- 180 Hz), though with greater power draw and lacking E-Ink (electrophoretic) display's persistence, but otherwise sharing bright-light / daylit visibility, are starting to appear.

What I've seen of E-Paper displays isn't especially encouraging on the cost front, as similarly-sized displays seem to have roughly comparable costs (~US$800 for a 13.3" display). But at least there should be a technologically-independent option, with the prospect for price competition.

That video has always felt unprofessional to me. I wish we'd choose something else.