I've been turning all my own lights off and going outside on moonless nights only to realize it's still bright enough to easily read once my eyes adjust :angery:
A couple years ago there was a big power outage in my town for a day or two. I wish I had started getting into astronomy and stargazing back then because I wasn't able to appreciate how dark it probably was at night. Didn't even cross my mind to look at that time. Eagerly awaiting the next time our rotting infrastructure allows me to look into the heavens.
Those electronic billboards are particularly egregious when it comes to light pollution. A lot of street lights could be made in a way that doesn't really contribute to light pollution since the biggest issue is the light going upwards, just sorta need a shade on them as far as I'm aware to keep more light from going upwards. Fuck electronic billboards.
The color play a big part as well, both in how it causes your eyes to adjust and in how well it scatters in the atmosphere.