Such lights direct almost all of their illumination toward the ground, not toward the sky or sideways into your eyes. They are cheaper to use because not as much light is wasted. They make it easier, rather than harder, to see. Personally, I've always considered the dark-sky cause a bit quixotic. It seemed so hopeless.
People know so little about the problem, and many think the more light at night the better.
But consider what Crawford and his allies have achieved in Tucson. There, the city has retrofitted all of its lights with full-cutoff fixtures, and it has worked with homeowners and businesses to control lighting abuses. Today, from downtown Tucson, you can look up and see the Milky Way. From 30,000 feet up, it seems to me that Crawford might be on to something important. Maybe we can regain our celestial equilibrium.