[slex]

Of course, no one who reads on an e-ink screen has ever considered turning the LED's monitor brightness down. Or tried using dark mode.

Irony aside, there might actually be some people who don't know how to regulate the brightness and to somehow fail to connect it to their eyestrain and/or headaches but:

1) I really doubt that a person who doesn't know how to tweak the settings of the LED screen will be even aware of e-ink screens as an alternative, let alone making the step to actually buying such a device.

2) In the light of 1) the proportion of users who were lead from LED to e-ink for this particular reason with be really small and yet from the discussion so far I infer the claim that somehow this is the case in general.

The fact is, there are lots of people who handle e-ink better than LED (even at favourable settings), myself included.