Frankly, I see this as similar to telling diabetics that they should use just enough insulin to get them to learn to stop being diabetic. That’s possible for a few type 2 diabetics who could make lifestyle changes that got them back into good ranges. It’s completely useless for type 1 diabetics, or type 2 who can no longer go back.
I’m neither diabetic nor depressed. I don’t have a dog in this hunt. I’m just always astonished at “have you tried not being depressed?” Some people can “snap out of it”. Many times that number of people cannot.