I recently started digging through some of the old unanswered YouTube questions, and I stumbled over several that don't really make sense anymore. Like this one: The user is asking about the autoplay button in playlists, but there no longer is an autoplay button.
So far I've commented on those questions that they're obsolete, but due to SE's design it feels like this may be missed by users; I'd rather have a big yellow banner saying something among the lines of "ye who enter, abandon this thread! there is no answer, for the feature is no longer!"
Is just commenting the way to go, or is there a better method?