embed component

When I am trying to author embed component in the "embeddable" tab I don't see any options available. according to documentation. YouTube has to show up by default

So I debugged a bit in the dialog it's trying to get options  form "core/wcm/components/embed/v1/datasources/allowedembeddables" , "core/wcm/components/embed/v1/datasources/allowedembeddables" which is registered as a servlet. 

In servlets i see the current source is expecting a contentpolicy. or else empty list 

https://github.com/adobe/aem-core-wcm-components/blob/fcf28dd899b91ddcd58185264d5351f8ea82244d/bundles/core/src/main/java/com/adobe/cq/wcm/core/components/internal/servlets/embed/AllowedEmbeddablesDataSourceServlet.java

https://github.com/adobe/aem-core-wcm-components/blob/fcf28dd899b91ddcd58185264d5351f8ea82244d/bundles/core/src/main/java/com/adobe/cq/wcm/core/components/internal/servlets/embed/EmbeddableOptionsDataSourceServlet.java

In my case, I do not use editable templates. So will the dropdown always be empty list ?