Even though golf clips make me queazy, that guy makes a relevant point... "get the body out of the way". Where have I heard that before?
I don’t know why we keep coming back to this topic. Seems that someone hasn’t embraced the Hanson Principle quite yet. Either that or someone seems to keep looking for an excuse for why they teach having the rear elbow widely displaced from the side of the body.
It is not the case that girls need to have their rear elbow further away from the side of their body because they have breasts.
See if this video helps explain things a bit.