Old content doesn't just disappear; it sits in web archives, waiting to hurt...

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

Old content doesn't just disappear; it sits in web archives, waiting to hurt your SEO rankings or confuse customers. When outdated pages resurface, they create broken user journeys and dilute your brand authority