> energy efficient lights seem to have no downsides
Efficiency is good, but this isn't true. Decades into LED-ification we still suffer shit-tier PWM strobing, poor dimming, disruption to wildlife and human life, and streetlights turning purple en masse.
(The last two are installation and quality issues, but when driven by lowest-bidder compliance with simplistic "efficiency" mandates that's what you get).
Efficiency is good, but this isn't true. Decades into LED-ification we still suffer shit-tier PWM strobing, poor dimming, disruption to wildlife and human life, and streetlights turning purple en masse.
(The last two are installation and quality issues, but when driven by lowest-bidder compliance with simplistic "efficiency" mandates that's what you get).