Holy crap, are you guys actually arguing this? Its fifth grade physics, it shouldn't be a problem. The longer the lever, the more potential force you can get on a projectile. The levers involved in disc golf are your legs and arms. Taller = longer legs and arms. Longer legs and arms = more D. Taller = more D. This is all potential, so don't reply with jimmy schmuck and johnny doughnuts that can out drive people taller then them. That doesn't help your argument, it just shows that mechanics make a bigger difference. Please read me correctly here; tall people do not automatically get more distance, but they have more potential.
If you were building a disc throwing robot and the only variable you could change was the arm length, wouldn't you max that sucker out to the max length the force level could swing? Of course you would, you all took fifth grade physics just like me!