Case in point: "the headline feature" (adjusting the color temperature of your display depending on the time of day) is something that has been around for years

Case in point: "the headline feature" (adjusting the color temperature of your display depending on the time of day) is something that has been around for years one way or the other on all operating systems. But not in Wayland. I'm happily using Redshift in Cinnamon (one of the other things keeping me on Cinnamon), but the fact remains that having it built into the distro makes it more readily accessible to everyone.