a scientific theory is a proposed explanation which focuses or points to physical, observable data and logical inferences. There are many things throughout the history of science which we now think to be incorrect which nonetheless would fit that -- which would fit that definition. Yes, astrology is in fact one
So you admit that you think "theory" should be redefined to admit astrology.
Interesting. Myself, I think that words mean things, and I don't want them redefined to accomodate anyone's PC, no matter who's pushing that PC.