Digression - This is of course less of an issue if you use the terminal in a style where you just move one page at a time, but you're just restricting yourself to a subset of possible use cases. I scroll in the terminal with the mouse wheel for skimming.
To solve motion blur, you either need strobing (along with a refresh rate above the flicker fusion threshold: ~80Hz), which E-ink will never have, or a high refresh rate, something like 240Hz. Still, if E-ink could even reach 50Hz it would be a massive improvement over LCD for use cases that don't require color.
E-ink does solve the pixel density problem and viewing angle problem (reducing eye strain and bad posture). Overall I'm still using high end CRTs for all use cases, and will switch to OLED once they get proper strobed offerings without all kind of bugs (and I'm still not sure if OLED fixes viewing angle shift. IPS-type LCD certainly didn't).
The self-luminescence problem that E-ink solves is also nice, but I'm not sure it matters much (it used to be my biggest pet peeve); you can just take an OLED which supports nice low luminescence levels at or below 120cd/m^2 (unlike most LCDs) and roughly match your room lights to it.
Low framerate and input lag will also cause eye strain and bad posture, respectively.
That last image: https://bsandro.tech/epaper/dasung_photo_3.jpg
gives me nostalgia of the late 90s when some of my friends had those new experimental LCDs, the same aspect ratio, the same slow pixel response, interesting frame, and brands I've never heard of.