The article is prefaced with: "Epistemic status: wild speculation." It seems like we rather do need more theorizing, because we don't currently have a theoretical description of depression that leads us to solutions. I know I've also seen him write about the possibility that depression is a set of interrelated diseases that look the same, and talked frankly about the inefficacy of treatments.

It's a fairly ungenerous read that would lead you to imply he's failing in some professional obligation. It's like discussing murder - how often do you need to state that you think murder is A Very Bad Thing? Do oncologists need to talk about how bad cancer is every time that they write about it in a public space? Eh.