Okay, now I've read the study and I have some thoughts.
-You have to remember this was a survey study, not a true experiment. With that comes a good deal of variability and allows many confounds.
-The study only looked at a one year change. What would happen 2-3 years down the road, would sleep times return to normal?
-Though the results are statistically significant, the article sights average gained sleep was 12-30 minutes. Helpful, but not a huge gain.
-The accident rates are interesting, but there are many many other factors that impact this.
You seem to be falling into the trap of trusting what you read from someone with a Ph.D. Maybe it's come from years of studying under those with a Ph.D, but they aren't always right. An article like this, or any single article, is part of the science behind this issue, and not too much weight should be afforded to a single study.
