LEDs have a lot to do with it. As people make the switch from incandescent bulbs that used 90% of the power they consumed to make heat to the LED that uses 10% or less of the electricity consumed to make light.
LEDs will glow even when the switch is turned off just from the very small current leakage or from the small amount of current on the neutral wire.
I read somewhere that LEDs can “fail dark” and still draw current. I don’t know if that’s true; in any event, the amount of current would be small.
“LEDs will glow even when the switch is turned off”
Back in the day you could use an incandescent as a ballast to light a neon so you could see the switch in the dark. Not any more.
Something is wrong if there is that kind of leakage.
Dangerously wrong
I suppose that depends on the quality of the LED. I’ve not noticed any sort of “glow”, in a pitch black bedroom, from the LED light in there.
I noticed that. Takes about 5 minutes for the glow to completely disappear.
CC