I understand that incandescent lights have an issue of fire, while other ones – only of electricity.
I heard from Rav Steinsaltz Z’L that Judaism is working slowly through issues, we are not always in a hurry (in response to a question “what is the meaning of Shoah”). It took some time for the Gemorah to conclude what the reason for destruction of Beit Hamikdash was, so we will understand Shoah also – after some time. Similarly, we will get a better answer on electricity “when scientists tell us more about it”. This was a couple of decades back, before LEDs.