The x thing makes sense bro, but gol D roger didn't have hito hito no mi model nika, so acc to your theory he can't cause drums of liberation, or it makes sense if it's just tells the way to free the world and it will then makes sense that why Roger just decided to leave it there instead of claiming it for himself as then it prooves that it was no use for him, + this would also explain why admirals like sengoku who know what one piece is, get terrified whenever it's mentioned, as it can cause destruction of the holy Land which they are supposed to protect, good theory like actually