In a lot of industries, the main factor is your network, and you just need A, B, and C to be adequate to check the boxes.

If that's the case, and someone's trying to hire you because someone they trust thinks you can get the job done, the question is whether or not a nanodegree can allow your interviewer to check a box for "has training in X" that will make the difference in sliding your resume past HR's desk.

for technical positions, it may help to get an interview but you still need to handle the technical portion of the interview