Yes this makes sense to me. I definitely think we should look for better ways to deal with mental health problems. And yes you're probably right that we should have a better standard than simply "you can now slave at a job, therefore you're healthy".
I think one good solution for mental health problems (maybe not always, but it can work) is talking to somebody who is willing to listen. This can be hard to find. But there are mental health charities out there who do great work in talking to people who are having problems. There are support phone lines and things like that.