Hi webbrewers,
Thank you for the reply.
About this page, it tells users that Audit log in SharePoint is retired, Microsoft recommends users to go to the audit log in Security center to see the reports. For more details, users can refer to this article: Search the audit log in the Security & Compliance Center.

We know that you will regularly check the feature updates in SharePoint, and you can learn new features quickly. This page may be removed in the future, however, for some users who don't often check feature updates, the existence of this page can remind them of the news about the retirement of this feature and where to use the new feature.
And I found an official article about this feature: Configure audit data for a site collection (microsoft.com)

Best regards,
Jazlyn