My sister just did a home remodeling and she added must have been 50 LED recessed lights in the ceiling. There are automated LED lights in the outdoor pathways, lights hanging on the balcony rails, lights under kitchen cabinets, lights inside closets, lights inside pantries, solar powered LEDs in backyard, etc.
Her appliances also have more indicator lights than ever before.
I’m not even counting the countless LED screens such as phones, iPads, TVs.
In total, she may every well have 10x more lights than before the LED boom.
Time Square in NYC was famous for having many lights and screens. Walk around any large Asian city in 2025 and they all look like time square with countless lights and screens.
Thats said, there is a limit to lighting demand because we still need darkness to sleep. I think the upper bound for intelligence is far higher than LED lights.