"I'm with those who believe that music is the ruler.If there is evidence that says the step begins and ends half way. My way of thinking woudn't it be better to move the step either forward or back onto the beat then maybe theses rocket scienists might become happy."
It's simply a matter of the definitions used to formally document dancing. Someone decided that, FOR PURPOSES OF DESCRIPTION, steps start and end when the feet pass.
If you want to re-write the defintions, then you have to adjust the step descriptions in the books to match your new idea of where steps start and end...