Odium I think it is because the Consult does not truly control the sranc except in proximity, think of the sranc on the plain chasing the skin eaters, they were bent on taking the skin eaters and only the intervention of the skinspy stopped them. And even then only the scent stayed their hand for a little while and the skinspy had to kill the leader, like a wolf taking out the alpha to become the new alpha. They did not know of the Consult, it was not even a myth to them. The brilliance of the sranc design has also made them uncontrollable except with the No-God, they multiply so fast and over so vast an area that they cannot be controlled. They are like ants, if left unchecked they will dominate the landscape, the Meorish peoples who became the middle-north believe themselves better because they battles the sranc clans for a millennia on the long side. Even now they battle them, in the judging eye it was said that some clans became scalpoi in an almost religious cause. They and the sclvendi have been a bulwark against the sranc coming into the three seas.