Defender GitHub documentation now in private repos

Forced to pick a category, so it's in Endpoint since that's one of the biggest areas affected:

I've noticed that all Defender documentation within Microsoft-Docs public repositories has now been stripped and moved to "defender-docs-pr" - a private repository on GitHub.

Anyone have any insight on the rationale behind this? Seems like a step backwards by hiding it all away.

More recent commit history showing all the removal of content from public docs repo - https://github.com/MicrosoftDocs/microsoft-365-docs/commit/dd143db5a2f8adf2d1bd483e33206b9c114d46dahttps://github.com/MicrosoftDocs/microsoft-365-docs/commits/public/microsoft-365/security

New private docs repo (this will 404 for most people) - https://github.com/MicrosoftDocs/defender-docs-pr 

Very disappointing change, as this will have walled away what was previously seen as a very collaborative platform for directly suggesting updates / fixes to documentation. I realise this may be in line with moving of feedback channels away from GitHub, but to now also lose visibility, rationale, history of the updates themselves from public view is a huge boon.