No, it’s not besides the point because you can have issues with poor visibility and those light guns are not immune from breaking down, and then you’d really want your other communication and instruments to be functioning as they should.
Look, I know we’re talking one in a million, worst case scenarios here, not situations that are at all likely to happen, just ones that theoretically could if Murphy’s law goes into full effect, multiple people at every level drop the ball, and the planets and stars are all aligned just so, etc.
Is not potato man, is secret police. Such is life.