Don't get me wrong. It's not about allowing or not.
The in-game fonts have to be pre-rendered and whatever with 2 different programs to be fed to the game engine in a way it could use them.
"Training is principally an act of faith. The athlete must believe in its efficacy: he must believe that through training he will become fitter and stronger, that by constant repetition of the same movements he will become more skillful."