emberfiend

The other emitted-photon difference is flashing. If your monitor uses pulse width modulation to dim, any brightness under 100% is going to flash high-frequency lights at your eyes.

Supposedly if this is done fast enough it's not unhealthy, but it's a case of "no solid evidence it's bad for you" plus anecdotal links to headaches. I have personally had drastically fewer screen headaches since leaving my hardware brightness on 100% and lowering brightness via the driver.

I'm a believer in the spectrum thing, too. I find halogens way easier on the eyes than ultra-power-saving diodes.

In case you haven't, please read some Culture (referenced above)! It features an extremely plausible integration of very strong AI in the lives of mortals, and handwaves minimally.

I wrote a long piece about escaping information addiction, based on my own decade plus spent climbing out the hole, including some of my own interventions. Sounds like you might find it helpful :)

https://www.defetter.com/