Everybody in this world seems to be pretty chilled out and not really caring about minmaxing their "quirks" and using them in optimal way - which makes sense in a world full of reality benders, why cheat in a competition to get a record that's pretty pointless anyway, when you can just have fun by giving it your all? Maybe everyone just doesn't give a shit and that's why there is no cheating. World full of super-powered people should be pretty utopian place after all.
I see it like some magical society not wanting to use magic for some stuff because it would be boring and lame.