Why videogame writing still needs some improvement

Star Ocean: The New Hope

So, my character in the game lands on a new planet and is soon assaulted by a bunch of big, scary spiders. He tries to shoot them with his gun, but their scary-spider-armor deflects his shots. He falls to the ground and scrambles to find an alternate weapon. One appears: a utility knife/sword thing. It ends up being an effective tool against the creatures on the planet.

Unfortunately, an hour or so later in the gameplay, the character "reveals" why he has "always" used a knife/sword thing. He claims he always uses it because, when he was a child, he tried to save his father by using a gun, but didn't know how to shoot it. Instead he saved him by fighting off a monster with a knife.

Things like this make me yell at the TV.