Incandescent generate heat, they're great if you need heat and one tone of light and that's it.
LEDs are part of a progression to everything being addressable, think of them as pixels. There's a decreasing incentive to not make everything addressable and support not just dimming but also colour. This is ultimately a completely different approach to environments. Transitioning from "the lights are on and I can easily see my broccoli" to very fine relationships between sources and qualities of light and their interpretation. Some of the benefits will be emergent, which sounds like hand-waving, and sometimes it is. (-:
LEDs are part of a progression to everything being addressable, think of them as pixels. There's a decreasing incentive to not make everything addressable and support not just dimming but also colour. This is ultimately a completely different approach to environments. Transitioning from "the lights are on and I can easily see my broccoli" to very fine relationships between sources and qualities of light and their interpretation. Some of the benefits will be emergent, which sounds like hand-waving, and sometimes it is. (-: