Blue light filters don't work – controlling total luminance is a better bet

Perceived benefits: comfort and eye strain

• Many commenters say Night Shift/redshift or warmer color temps noticeably reduce eye strain, headaches, or migraine sensitivity, even if only partially.
• Some prefer permanent low color temperature or greyscale, reporting less visual fatigue and fewer headaches. Others find dark mode itself more relaxing, or conversely find dark mode worse (especially with astigmatism).
• Several distinguish “feels better on the eyes” from any claim about long‑term health or sleep.

Sleep effects: highly individual and contested

• Reports range from “no difference at all” to “strong, obvious effect” on sleep timing and quality.
• A few describe dramatic chronotype shifts after adopting Night Shift/flux and other “light hygiene” habits; others say they fall asleep easily regardless of screens.
• Some note that poor sleep has very different consequences person‑to‑person, so generic advice often doesn’t fit.

Luminance vs spectrum (blue) debate

• Many accept the article’s point that overall brightness and total light dose probably matter more than just removing blue.
• Others argue that OS “night modes” do cut a substantial fraction of luminance in practice, so dismissing them as ineffective is overstated.
• Multiple people emphasize simply turning brightness way down, using bias lighting, or matching screen white to a sheet of paper.

Placebo, science, and personal experimentation

• Long back‑and‑forth about placebo: some say a “working placebo” is still valuable at the individual level; others worry this supports pseudoscience and marketing.
• Several criticize the article’s reasoning as mechanism‑heavy and data‑light, arguing that definitive claims (“don’t work”) require direct outcome studies, not only receptor/curve arguments.
• Others counter that the blue‑light craze itself was built on thin, over‑marketed evidence.

Glasses, strong filters, and lighting setups

• Some use very strong amber/red glasses or software filters that essentially eliminate blue/cyan, claiming clear sleep or migraine benefits.
• Others point out that many commercial “blue‑blocking” products only remove a narrow band and leave much of the circadian‑relevant spectrum.
• People describe environmental strategies: dimmable smart lights that warm at night, red/orange bulbs or flashlights, or scheduled dimming as a behavioral cue for bedtime.

Overall sentiment

• Consensus: partial warm shifts alone are unlikely to be a magic sleep cure; brightness, total light exposure, timing, and general habits matter more.
• Still, many will keep using blue‑shifted modes because they feel better, regardless of whether the mechanism is luminance, spectrum, or placebo.