Your hyperbolic statement is obviously incorrect.
Today I drove 400 miles from California to Oregon and used NOA about 99% of the time. It worked very well about 99% of the time. Really made the drive much more relaxing than in the past.
And yes, there were other cars on the road. With human drivers. None of them got pissed off as far as I know.
I use noa daily for my hour long commute. It works amazing