They also won't have screen where they are likely to feel anything has too much contrast.
IMHO a screen which displays a common black and white website with so much contrast that it strains the eye is a 100% failed product which completely ignores reality.
A website which has so much contrast that it strains the eye on any spec-compliant monitor or a cheap 1990s CRT is a failed product. Reducing the quality of monitors to compensate for shitty websites can't be the solution.
Same for black and white text documents.
Or black and white shell promts.
And so on.
So it's pretty obviously for me what is detached from reality and what isn't.
EDIT: It's the color space which is broken I guess, white (on a website) should be neutral background white not eye hurting brightness and the color space should have some "whiter then (normal,neutral) white" colors. I.e. the normal white color should not have defaulted to maximal brightness.
Sure, but that's already the standard.
The people who obsess over using #fff as default white just happen to be the ones whose monitors show #fff the way #ccc was supposed to be shown (and used to be shown, on CRTs)
Because designers are taught that too much contrast causes eye strain. They're advised against putting pure black text on bright white backgrounds.
https://www.wired.com/2016/10/how-the-web-became-unreadable/