> I don't agree that each file on its own is a separate work subject to copyright.
Each is an individual work of authorship meeting the requirements for protection under copyright law and as such is automatically protected on creation as an individual work. Each is distributed with an individual copyright notice and individual statement of the license terms, so the recipient also has notice that the protection which is automatic under copyright law is claimed by the author, and the licensing terms applicable to the work. Redistribution without preservation of the copyright notice that appears in the work as required by the license is a clear, willful violation of the license.
Each is an individual work of authorship meeting the requirements for protection under copyright law and as such is automatically protected on creation as an individual work. Each is distributed with an individual copyright notice and individual statement of the license terms, so the recipient also has notice that the protection which is automatic under copyright law is claimed by the author, and the licensing terms applicable to the work. Redistribution without preservation of the copyright notice that appears in the work as required by the license is a clear, willful violation of the license.