A helpful article can still be invisible at the moment somebody needs it. The usual cause is not a lack of documentation. It is a gap between the words a support team uses and the words a visitor types when they are halfway through a task. WordPress knowledge base search needs a small, repeatable quality-assurance routine so a content change can be checked as a real customer journey, rather than merely published and forgotten.
That routine is useful after a product release, a policy change, a category redesign or a run of similar support messages. It tests whether a plain-language question finds an answer, whether the result makes its purpose clear and whether the intended reader can actually open it. The aim is not to chase a perfect score. It is to stop predictable dead ends becoming avoidable emails.