Its sad. Mental illness usually is.
Its sad that the QPS made it bigger than 10 bears when it didn't need to be.
There is some inaccuracy somewhere though - either he is older than 54 or he isnt a viet vet. The last NZ forces left Vietnam
in 72 as did almost all of the Australia
Army. A training team stayed on and a guard unit, they all left in 73. In 75 there was a short "humanitarian aid" effort to evacuate various US/NZ and US citizens from Saigon. The maths just dont make it.
Which isnt to say he didnt serve his country. Just the the media, as usual doesn't do basic verification of what it is told.
Simon's comment above is a bit rough, but probably fair.