It is mutually exclusive. You cannot “protect freedom” and impose restrictions on freedom. Also, no, you just explained how the licences worked and didn’t provide a single argument as to why having the freedom to licence your work however you want is a bad thing. The GPL doesn’t ensure that the software stays free, it ensures that it keeps control of the software and all future additions to it even if they’re completely unrelated.

Also, copyleft is just newspeak for copyright.