As far as the new high efficiency bulbs, we don’t use that much energy burning light bulbs in the first place. The real user of energy is heating water and warming living spaces. Air conditioning uses lots of energy too.
What if it was discovered that these things emit excessive UV radiation and cause a jump in skin cancers? And, do these things work on dimmer circuits?
24 hour wifi computer networks at homes are also draining power. We used to turn off our electronic devices at night.
Changing light bulbs are like putting a band aid on a deep gash. A futile effort.