Don't know if anyone has mentioned it or if you realise (I'm sure some do), there's a big difference between a stuck pixel and a dead one.
Dead pixels will never be revived, by any means at all, I'm certain. They are destroyed/broken that's why they are called dead. AFAIK they would appear to be turned off, no colour produced by them.
Stuck pixels will appear as a static colour that doesn't change much. I guess it is possible for pixels to be stuck "turned off" though, which would make them hard to discern from dead ones?
Apparently the shaking of the screen/massaging of the affected area/flashing colour things, serve to help spread the liquid into pixels that had not gotten proper coverage yet, thereby fixing them.
But with dead ones a small component is actually broken, so these procedures will have no effect.