HotCakeX Thanks! I'm glad this change will help simplify your deployments. 🙂
lalanc01 apologies for the inconvenience. As stated in the September blog, we plan to fully transition to the new one cumulative update packages (LCUs + SSUs together) and publish only those payloads to the typical Windows 10 1903 and later product category and no longer publish the LCUs and SSUs separately down the line. Until then, we are publishing the one cumulative updates to the Windows Insider Pre-release category to provide an opportunity for admins to switch over prior to one cumulative updates (SSUs + LCUs together) becoming the default state. Does this help to clarify?
P.s. You make a really good callout about having to decline updates. We should be expiring the old feature updates that are no longer being used for validation to keep the pre-release category small and I will actually go work on that to simplify such in future. 🙂