When you change how something works, do you go back and fix the posts?

I changed how signup works on my thing about a week ago. Four of my own published videos still describe the old behaviour, word for word, and I only noticed because I went looking for something else.

They're not badly written. They were accurate when they went up. The policy moved and the back catalogue didn't, and there's no mechanism anywhere that would have told me.

Two ways out that I can see. Unlist them, which costs me the small amount of reach they still pull and leaves holes in the history. Or retitle and rewrite the descriptions, which keeps the view counts but means the thumbnail and the first frame still say the old thing, because I'm not re-editing four videos over a copy change.

I went with neither so far, which is the honest answer. They're still up.

What I can't work out is how much it actually matters. Nobody has ever commented on any of them. If a claim is wrong in a video nobody watches, is that a live problem or just untidy? I'd rather know before I spend a morning on it.

Does anyone here actually audit old posts when something changes, or do you let them age out?