I think the more this is talked about the better, depression and suicidal tendencies are hard enough to deal with enough without having to also be scared of prejudgment.
I'm sure it helps when any person who's a known success like JK Rowling talks about depression, because it proves that you can still have a happy productive life even if you do suffer from depression. I don't think it'll solve the problem, but it might bring it more ot the awareness of people.