For the vast majority of people who claim to be depressed it is absolutely fake bullshit and a cop out. The majority of people do not have serious mental impairment that is due to major chemical imbalances or irregularities with the structure of their brains.
The majority of people would clear up their "symptoms" if they detached from the bullshit that is society and actually put their efforts into being better. Working out, making relationships, creating something.
But what people want is to feel better quickly so they cry to therapists which is in itself a selfish act, and run through psych meds that we barely understand.
What most people need is meaningful relationships, purpose, good diet and physical work. Psych meds, diet pills and therapists that lie to you doesn't help any of that. Most people arent depressed they are simply lacking purpose and direction. Theres a reason why people in tribes in the Amazon aren't "suffering from depression", because it's bullshit.