The game was so buggy it isn't worth free

Does this moving region of spacetime or warp bubble or whatever it is actually exist? Either I am misunderstanding something or this is a theory using a theory that is possibly flawed. Why research what would happen to a bubble that has not been proven to exist? Wouldn't it help to figure out if it is possible for the bubble to exist before guessing what would happen to the bubble. It seems to me like this team of physicists have put alot of time and effort into figuring out what might happen if someone elses day dream is correct. Wouldn't it make alot more sense to research whether or not the foundation is there before you build the house on it?