A British Knight might not need to keep his right arm free to attack opponents coming down the road at him, but an English man still drives on the left side of the road.
But what happens when the legacy code is malignant, and nobody noticed?
The phrase "boys will be boys," dates back to a time when boys who stepped too far out of line were guaranteed an ass whipping by the nearest adult witness, backed up by full force of society.
That no longer happens.
But the phrase remains.
To our detriment.