Yes true, they can be modified.
But modded controllers don't bother me, and modded accounts don't affect the gameplay in my opinion; also, the people that maintain halo and call of duty's online play are good at patching.
I thought hacks for CoD:WaW were patched on the Wii, but they weren't.
Shows even the most unattended and shittiest of games on the shittiest console are still cared for.