When old, forgotten content resurfaces due to web scraping or lingering search...

https://stateofseo.com/should-i-301-redirect-old-urls-or-leave-a-404-the-reality-of-content-decay/

When old, forgotten content resurfaces due to web scraping or lingering search cache, it can confuse your audience and dilute your brand authority. Don’t let outdated pages linger in the results