I am not a physicist by any means, so this may come off as a dumb question, but: If gravity waves have been discovered, and they move at the speed of light (spe

I am not a physicist by any means, so this may come off as a dumb question, but: If gravity waves have been discovered, and they move at the speed of light (speed of causality?), being thrown off by the most energetic events in the universe, how can something like an Alcubierre drive even work when essentially it is also a gravitational wave generated by far less energy?