I was under the impressions that street lights promote safety by reducing chances of person to person crime. It’s harder to hide in the shadows and get away without people seeing you with streetlights. So a handheld flashlight doesn’t solve that problem.
The problem is that extremely powerful lights, as many cities are tending to more and more, can actually create more blind spots and makes it harder for our eyes to adjust to those dark spots. If cities adopted more, weaker, warmer lights we'd likely see much less damage to the ecosystem AND increased safety
In typical night conditions, a single Nichia 219-series LED at full drive would temporarily flash-blind someone with just a quarter of a second of exposure.