Well right here the premise for this nonsense is flawed. The trigger IS manipulated by the shooter for each subsequent shot. This law will get shot full of holes if it ever goes to court.
Specifically, these devices convert an otherwise semiautomatic firearm into a machinegun by functioning as a self-acting or self-regulating mechanism that harnesses the recoil energy of the semiautomatic firearm in a manner that allows the trigger to reset and continue firing without additional physical manipulation of the trigger by the shooter.