Probably because his kid wanted to make a number guessing game? I feel like the last thing you would want from a children's programming language is "why would you want to do that? Go learn Java if that's the type of thing you want to make"
It seems like Scratch is made specifically for game development, since everything revolves around the concept of manipulating sprites. "Guess the number" is a game, but not the kind of game that this tool was made to create.
