Hmmmm..... I thought Roberts's comment was about Justices writing separate opinions, rather than non-unanimous votes. The article said that Gorsuch wrote 7 dissenting opinions in 2 months, as many as Kagan wrote in 2 years.
So, Kagan dissents without writing an opinion about it. She’s lazy.
When Roberts first took the reins, I had thought that his ideas of trying to get strong majority decisions was good, but most likely unworkable. That's become more obvious as time as passed, but I suppose if he's truly going after Gorsuch, that's to our detriment: it would be as if he's trying to put the brakes on another Thomas-Scalia-esque partnership before it begins.