Being open about mental illness?

I was watching a television show where one of the characters is applying for college. She had been suffering mental health issues, including a brief hospitalization. After getting rejected from schools, her counselor blamed it on her admissions essays. Particularly, he took issue with her discussion of how she  successfully made it out of the institution. He calls it overshare, she says that she is just being honest and that this is her greatest source of pride. He argues that it's not the fact that she struggles with a mental illness that is necessarily the bad thing, but in this current climate of mass shootings, schools would not be willing to take a chance on anyone who admits to having a mental disorder. In other words, it’s fine to have a mental disorder, but it’s quite another thing to admit to it.

But what is the signaling power of discussing mental issues (not just disorders but depression, suicidal or violent thoughts, etc.). Does the willingness to vocalize these thoughts mean that you are particularly bad off? Or particularly likely to act on them? Or particularly unstable? Possibly, because if there is a social norm of never discussing these issues, then you are certainly violating this social norm and people who violate social norms are often written off as being dangerous and anti-social. On the other hand, what is the origin and purpose of the social norm? Do we think it’s particularly harmful for people to express these thoughts? That perhaps by voicing the thoughts, they move one step towards acting on them? Or is it simply that we find these thoughts distasteful, the same way we know we all defecate, but it’s highly inappropriate to discuss one's irritable bowel syndrome in public (which perhaps explains all of the commercial advertisements addressing highly embarrassing bodily dysfunctions? People can't talk about it so you have to reach them directly?). But a major reason why we don’t talk about defecation is because we have natural visceral reactions to it (the same way we gag at the smell of vomit). Why such a strong reaction against bad thoughts?

I watched Silver Linings Playbook recently and thought it was a great portrayal of the sorts of internal and social struggles that people with mental illness deal with. Once these people get their disorder under control, what do they have to look forward to? Working minimum wage at a fast food place or mowing lawns? Living with their parents and other family members for the rest of their lives? Certainly not attending university or getting a good job, not without both omitting their mental health struggles and coming up with a plausible explanation to explain a résumé gap. So no, the struggle/stigma with mental illness doesn’t stop after treatment success. And how does society benefit from perpetuating the stigma? Maybe they can more plausibly lie to themselves that their school or place of employment is free of whackjob crazies. They’re not, and the ones that are there are probably the ones who never sought treatment -- which is more dangerous?

Of course all of this goes double for sociopaths. Crazy people are just sick, but sociopaths choose to be that way.