It’s not necessarily the perceived brightness that I am worried about. Illuminated surroundings outdoors on a sunny day are obviously perceived to be brighter t

It’s not necessarily the perceived brightness that I am worried about. Illuminated surroundings outdoors on a sunny day are obviously perceived to be brighter than any screen… But here we have a flickering light source that is microscopically very heterogeneous. LED emission spectra (even for very expensive ones) are extremely non-uniform and “peaky” at narrow bands of wavelengths. I’m not as worried about it as I am of lasers, but it’s a similar idea, maybe (very loosely speaking).