Notice where is says theory. Anyone who hangs onto a theory and dismisses all other theories solely because it inhibits their bias may not be legitimate in their motive. The way you hang onto this as being equivalent to absolute fact and allow no room for alternatives proves you clearly lack an open scientific mind. This is why hacks need to be kept in check. There is most certainly legitimate science that says this theory be wrong, but is primarily rejected because so call educators don't want to have students students thinking otherwise.