Related to: LRSUPPORT-28741
Customer wanted to know if MB categories and threads can be shared from parent to child sites.
CSE explained that content-sharing / parent-child site inheritance was not for content sharing; the Site Scope feature is not related to the content sharing options configured in the parent site and thus, it does not offer the parent site scope option. One option is to create the child page as an Embed type then nest the parent site
Per Christopher Lui:
"After reading this, I think it may be better for the KM team to revise https://help.liferay.com/hc/en-us/articles/360017892572-Advanced-Site-Settings-#content-sharing instead of creating our own article to further explain that Content Sharing doesn't actually mean you can share content, but rather, content elements (such as Document Types).
It will be less confusing that way since some readers may think that our reference article may contradict the official documentation."