Hi Andreas, there is nothing to argue here.
Patches sent against files in Org's core are like patches sent against GNU Emacs files. The submitter needs to agree to have it licensed under the same condition than for GNU Emacs, and needs to assign his copyright before they can be integrated. If you modify some Emacs file, you have to license it under "GNU GPLv3 or any later" licensing terms. If you want these files to go into GNU Emacs, you have to assign your copyright to the FSF first. I won't spend more time on this as I have to focus on code. Thanks, -- Bastien