Fred99:
Maybe part of the problem with the mental health system is that "mental health issues" covers such a wide spectrum, several different specialities, GP, psychiatrist, psychologist, nurses, counsellors, social workers, etc, there's a wide range of opinions and generalisations about treatments, sufferers often tend to not seek help for several reasons, specific diagnosis is difficult - so claims made about what's actually going on are arguable - especially so when there's a lack of resources including funding.
If there's an epidemic of mental health issues, I doubt there's some causative factor that's unique to NZ. Seems to be a "western" thing with many possible contributing factors - "the way we live our lives these days". (OTOH in many cases it's almost purely random - with no significant correlation to anything}
Back in the day, before my day, my Nana used to say stuff. Later on, life was still quite simple, so family ties stayed tied. These days there are devices and super cheap fast cars (refer Timaru tragedy) and that cyclist gal from Olympics 2016 who took her life (I assume) due to pressure. Life now is so much more complicated and the expectations that go with it. Im not sure what the answer is but Im close to one that suffered the ultimate fate, and more than one who are in that category. I just don't know.