The old accepted rule of rightnof way heading out is probably important for windsurfers. It's not for kiters. Easy peasy to turn around and ride off. Don't have that awkward stalling, pump the sail looking thing...
plus, windsurfers understand rotations. Kiters just punch n and out all over the place. Meaning a windsurfer is normally down the line and coming back out not through the lineup.
Kiters on the other hand ....