I highly doubt 20% of light bulbs purchases are going to appliances. Refrigerators have been using LEDs for over a decade now, and even when they weren't, they lasted significantly longer due to being operated at colder temperatures and for significantly less time. Oven lights also last a long time because they are off almost all of the time.

I think your original questioning of what's the point was valid, but now with more data presented to you you're being dismissive and not bothering to research why they did it. Reducing energy consumption still matters even if we were to get to 100% renewable overnight (not possible) because constructing the renewables still costs carbon at the moment. We need to be doing everything we can, and this decision isn't taking resources away from other decisions, that's a fallacy.