I'm curious what kind of project would even need such a repository size. From a distant view this sounds like heavily mismanaged build artifacts in the project's git history; or abused storage for free CDN of video data or similar.
I was re-reading the announcement but as far as I can tell it only states repository size everywhere.
The linked cleanup instruction articles also mostly show repo size (git gc et al) and nothing related to the releases section of a repository. [1]
I'm also still unclear about what exactly is part of the package registry storage and whether or not releases in the repository are part of that.
[1] https://docs.gitlab.com/ee/user/usage_quotas.html#manage-you...