Building on an earlier post advocating two-state (rather than tri-state) dark mode toggles, the author now argues that most websites shouldn't have a persistent dark mode toggle at all — the setting should default to following the OS and live in a settings panel instead. The piece responds point by point to Bramus's counter-argument for tri-state toggles (a scenario involving OS auto-switching plus reverted selections), calling it rare, cheaply recoverable, and a case of developers overweighting their own edge cases (IKEA effect meeting false-consensus bias). It also surveys community-designed alternative toggles (Vale's 3-in-2 design,