Stale content has a habit of resurfacing through search engine caches or...

https://wiki-book.win/index.php/Should_You_Noindex_an_Old_Page_or_Rewrite_It%3F_The_SEO_Cleanup_Framework

Stale content has a habit of resurfacing through search engine caches or forgotten site archives, often confusing users and diluting your authority. If you’re seeing outdated pages pop up in rankings, it’s time for a technical cleanup