Siebe said: “I belief this last view is meant when it said that a stream-enterer posseses the Nobel Eightfold Path (is this case right view). Not meant is the mundane Path.”
That is exactly right.
With mundane samma ditthi, one becomes moral (gets rid of the ten types of micca ditthi).
One enters the Noble Path (the Stream) with lokottara (transcendental) Samma Ditthi (by grasping anicca, dukkha, anatta, the Three Characteristics of the world).