Depression is completely different from things like sadness and anger. There is a superficial outward resemblance, but that is all. They are conflated because people who have never experienced it try to slot it into what they know, so they decide that depression is just the sadness they know, but stronger. It's not.

But no, I'm sure that saying depressed people are just sad and have control over their own feelings and that Prozac is no better than a lobotomy is going to totally help people.