Because there was nothing to the so-called model ab initio. It was supposed to be just another slogan to replace the dangerous "hustler" narrative which has the potential of sparking off a class/tribal war. It was not meant to be brought centerstage to be debated and possibly deconstructed the way it has and Ndii did not think it through after they agreed on it and his name was tagged to it as the expert consultant.
He is now discomfited for being forced to explain it under pressure and he is not ready. It is a contradiction because it is the product of the same top-down thinking they are criticizing. Hence their rather lame attempt to say they are planning to take it to mashinani for Wanjiku to say what she wants.
Catching...The fact his ego is bruised by being questioned by ordinary joes.