Debian is taking care of security maintenance of the software they ship. Now: maybe they will do a poor job of it, but that's another issue than intent; some us

Debian is taking care of security maintenance of the software they ship. Now: maybe they will do a poor job of it, but that's another issue than intent; some users misdirect support requests to the upstream, but unless Debian version is misleading them, that's a problem with the users. The point of free software is to be free. If you do not wish people to be allowed to use and maintain it, and if you wish to have the possibility to "unpublish" or make old version non-free, you should use a non-free licence to begin with.