[dreamlayers]

I think a big part of the problem is use of cool white LED lights, which produce more light on the blue part of the spectrum. That light scatters more in the atmosphere, like how the sky is blue during the day.

Around here, the LED lights do not seem brighter like the article claims.

Also, they are all full cutoff. In the past, almost all high pressure sodium streetlights meant to send light downwards had a glass globe below, which sent some light upwards. LED streetlights have flat panels instead, so none of the light fixture itself can directly send light into the sky. Only light reflected from illuminated objects and scattered by the air can light up the sky.