Jarvis,
What if someone found a simple exploit for the way the server handles IIQ mods on gear or gems? Like old D2 aura stacking. Simple buffer underrun. You would need nothing more than a simple misclick or accidental sequence of events to figure it out.
IE: Weapon switch after last hitting a mob with IIQ gemmed skill, maybe IIQ gets locked. Change to next weapon with IIQ gem and it stacks. Rinse and repeat, etc. You can very easily conclude if you have a significantly increased drop rates with emperical data alone.
It's obvious that this claim is bullshit, but don't convince yourself that it requires a lot of skill to find useful exploits. It's more commonly just playing around with simple in-game mechanics than it is finding targetted exploits (in my experience).