If by 'scientific theory' you mean 'totally useless conjecture devoid of evidence'
Then I agree completely with you about the 'Expanding Earth'.
It is not a theory, it is not scientific, and it is a waste of bandwidth at a forum where peole discuss the real world.
It is not even as interesting as creationism, where you at least have people who are trying to fit antiquated interpretations of an established religion into the real world.
Ed