Newbie question... unclipping, stopping, horses

[Dogmama]

"If you are right dominant, then your first pedal stroke would be with the LEFT foot ... not the right. This way you can learn to get cliped in with the foot that you're most comfortable with.
Leave the left foot in the clip when you come to a stop, put the right foot down. With the left foot at 3 o'clock, push down to begin the stroke and as you're rolling get the right foot cliped in."

I'm right dominant & I unclip my left foot. Go figure.

I read that the reason to unclip left is so you do not fall into traffic.