I would say that too much mis-informed talk is probably not a good idea. The balanced view would be to acknowledge those normal negative thoughts and emotions. And that is the crux of the issue. Knowing when those thoughts become abnormal is, hopefully, helped though a broader public education and acceptance of mental health.
Knowing that, if you do in fact need to seek help whether from a friend, professional or even a stranger, you will not made to feel neurotic or told to "snap out of it" is where I hope the end game for increased mental health goes.
Mental and physical health are so closely related - mind and body. It's taken decades to start to get a foothold of acceptance for this type of thinking in the mainstream.
I hear what you are saying about not overdoing it, but lives have been lost because people were too afraid to talk. I don't know what the longer impact of more social acceptance of mental health issues will be but it is my wish it leads to a more compassionate world.