Kruse goes into this in depth in the first Danny Jones podcast he did. It was researched in the 50-70s IIRC, "they" (DARPA/CIA) figured out that blue light was able to hijack our dopamine systems and create addictions.

The push for LEDs everywhere, as you astutely point out, looks intention because IT IS intentional. How beautifully their narratives tie together, energy efficient lights go hand in hand with climate change.

I have adopted the idea that light conditions underpin all aspects of health. We're sicker as a population in seemingly unprecedented levels, which is ironic considering we're supposedly at peak health care on a historical basis.

There are a lot of things we can point at, all of which I think contribute to some degree, but the more I explore the topic the more foundational it seems to be.