I think your question does not show how much you have researched before and where/why you are stuck. Implementing dark mode is a well-known problem that has been solved many times before, and SO makes a point to not repeatedly answer the same questions - so judging only by the context you provided I assume it was closed as a duplicate or as low-quality.
Given your frustration it seems that stack overlow‘s mission is at odds with your expectation, which is for sure facilitated by the fact that in the past , SO advertised to be a place to ask any programming related question, when this is not the case. (And had never been)
Given your frustration it seems that stack overlow‘s mission is at odds with your expectation, which is for sure facilitated by the fact that in the past , SO advertised to be a place to ask any programming related question, when this is not the case. (And had never been)