True, but hacks don't seem to mess much with mods. Probably because they are not ranked (ea ranked, that is).
But the mods have addressed some of the exploits. I play POE and they have something that immedatley kills anyone who glitches into a wall. And they also have a 'dome of death' option. When on, enemy players who enter an UCB get health taken away -- like when you go out of bounds.
I'm sure the POE team would be happy to show Dice how to fix BF2.