I'm not a teenager, but I watched 13 Reasons Why in the days after a mental health crisis where I suddenly quit my job, was about to commit suicide and was committed in psychiatric emergency under the Mental Health Act.  I'm still not sure how, but watching this actually helped me snap out of it (this isn't a testimonial, and obviously there were other factors  - I just know that I'm no longer immediately suicidal). 

The problem isn't TV fiction - it's a lack of resources. When you do go to a family doctor (if you can find one), HR or even emergency, there's little they can do.  And sometimes, talking about it, especially at work, can make it worse. Compare that to the mechanisms that begin working when you're diagnosed with cancer, MS, or Alzheimer's (and, no, those support systems aren't perfect either - but at least you're not entirely on your own).