The guy who wrote this opinion piece does not know what he is talking about. First off if the experts can not seem to determine how Roberts will vote on issues I can not understand how this guy could. Roberts views on so many subjects are a mystery to me and I watched or listened to most of those hearings.
Next my own opinion is that Roberts was totally vetted before he was chosen. In my own opinion the religious right want the same kind of judicial activism from the right that the leftists want from the other side. So if they are angry, just like we know the liberals are also angry-its a good thing. An originalist showers disdain over "movements" in general, because movements on the left and right of the political spectrum come and go over the long years, but the consititution stays whole.