I can vouch for that. The only time I've had serious trouble getting something from Netflix was when I tried to get "Cowboy Bebop", first session. I've only had two occasions of bad disks. The turnaround has consistently been no more than three days from my shipping the movie back to getting the next one.
Is this news troubling at all? Yeah. I don't like to hear it. But Netflix has always worked for me and their service has been reliable for almost two years now.
I actually sent back a scratched disc, reported it, and received the SAME scratched disc later. I could tell because it had a distinctive shape.