You're right, it is important to remind that GPL is shooting for user freedom, and final users getting free access to modifications; that authors enjoy modifica

You're right, it is important to remind that GPL is shooting for user freedom, and final users getting free access to modifications; that authors enjoy modifications is only a nice side-effect that isn't even required at all, but is in practice common. The misunderstanding seems to be from the clear separation between users and developers that GPL does.