Why can I not see the "Add Folder" or "Move Content" options in my CMS Workspace - I only see "Add Content" - I have full admin permissions in the org and as contributor in the workspace?
The buttons "Add Folders" and "Move Content" have been added to the UI as part of the Winter'21 release. See the release notes https://releasenotes.docs.salesforce.com/en-us/winter21/release-notes/rn_cms_folders.htm
I have been able to replicate and confirm this behavior in my Summer'20 and Winter'21 Orgs.
Note: The CMS Folder, Move content permission have been launched as a pilot program earlier