Not sure why you're being downvoted, thought you had some great points.
As someone who has struggled with mental health myself in the past, I'm kind of wary of the whole "let's reduce depression down to how we would treat a broken arm." argument. While it's good intentioned, and I totally agree we need to reduce its stigma in society, I wonder if it does more harm then good in the long run.
Depression is a disease of the soul, and I think it is so deeply embedded in the human experience that we can't just compare it to a physical ailment. I agree you shouldn't define yourself by a mental illness, but it no doubt deeply affects how you perceive and think about the world, sometimes for worse, but also in my experience, for the better. Good employers take this into account, although i think it happens more on a employee-manager relationship level than through organizational rules. But culture helps a lot.
I think we should broach the topic of depression as a society with deep care, empathy, and patience, recognizing how enormous and fundamental it is to the human experience. To compare it to a physical ailment is restrictive and a bit reductive. (If you can't tell, I think the biochemical causes of depression are a bit overemphasized in today's society.) We will be less frustrated at the lack of progress if we understand the enormity and complexity of the problem.