jpackage requests permission via a dialog

[Michael Hall]

If I remember what I read correctly it was Apple’s intention that some services require explicit user authorization. 
So, the dialog. 
You could probably hdiutil yourself but the AppleScript does have benefits. Such as a background image, the drag to Application Folder option, layout appearance with multiple files.  I think there was some provision for customization as well. 
From what I remember.