As the article says: > This article is about how to implement a good dark mode toggle, if you have already decided you need one. It does not prescribe whether

As the article says: > This article is about how to implement a good dark mode toggle, if you have already decided you need one. It does not prescribe whether one is necessary at all. If you decide to simply default to the system preference and not offer a toggle, I think that is a perfectly valid choice.