Can (Does) the Roberts Court Say What It Means and Mean What SCOTUS Says?

From Adam Liptak's New York Times feature, Justices Are Long on Words but Short on Guidance:

The Supreme Court under the leadership of Chief Justice John G. Roberts Jr. is often criticized for issuing sweeping and politically polarized decisions. But there is an emerging parallel critique as well, this one concerned with the quality of the court’s judicial craftsmanship.

See Orin Kerr's comments about Liptak's article at Clarity in Supreme Court Opinions, and the Role of Concurrences.[JH]