Click to continue is simply the default message if there is no loading screen. Centring a graphic is easier if there is no text to consider in the vertical centring operation, especially when dealing with something like a centred 4:3 screen. Shifting it upward by the amount of text might look jarring, especially if the art is in a modern style and the text is in a retro style. I realise that a bit more of a hint is probably required here. Let me stew on this.