Put yourself in the shoes of someone who has no idea what systemwide dark and light mode settings are. There is exactly one reason they are seeking out this con

Put yourself in the shoes of someone who has no idea what systemwide dark and light mode settings are. There is exactly one reason they are seeking out this control: "It's in dark mode and I want it light" or "It's light mode and I want it dark." The improvement for them is that when they get here and see "Dark, Light, System" with System selected, they wonder "What's System?" Is System important? Will I break something if I change it from System? Is this even the right setting or is this something else? If I want it changed back to Dark later, do I need to choose "System" or should I choose "Dark"? Will this have unexpected effects on my whole computer if I choose "System" in this webpage? > including a button that doesn't always do the same thing when pressed The non-engineer would say the "System" one "doesn't always do the same thing when pressed" and that the "Light" and "Dark" in the 2-way control absolutely always do the same (and desired) thing: Immediately change it to Light or Dark. The side-effect of saving it as an override is, to be fair, a guess at their intent, but it's a very good bet.