Having been both clinically depressed and just generally negative and miserable, I think there's a large difference. This article addresses the latter of those two situations in a way that resonated pretty deeply with me. Clinical depression is drastically different and should be treated more as a disease than a state of mind. I don't believe this article comes across as suggesting its conclusions can treat clinical depression but rather are the symptoms of highly negative and miserable states of mind.
Hard to distinguish, as clinical depression produces many of the maligned behaviors, making it reasonable to read this piece as an attack on those suffering.
OTOH, there is a CBT angle here. That is, a depressed person may find relief in working to recognize and change the behaviors and thinking that supports those behaviors.
