Personally, I disagree. I found 3D view invaluable when being guided to a destination. It provided a much better perspective of the roads ahead and where you had to go, and showed a larger sized map area.

When I am being guided by the nav, the display of street names for roads that I am not interested in, was not of importance to me, but making sure I know where to turn was.

My favourite map display was 3D with split-screen showing arrows + street name on the right hand side. I found this worked very well.