Sir:
Me thinks that it is you that missed the whole point of that window.
Although pointless in your opinion, most experienced pilots like to clear airspace into which they are about to fly.
This (in your opinion 'dinky') window, is in fact priceless when your solo right seat pilot is turning left.
Army pilots were taught to verbally call out before turning: "Clear left, and above"
The pointless dinky window also is very helpful flying standard left hand traffic patterns.
Frank Robinson does very few "pointless" things.
Low time pilots do many.