Yeah, that is a load of crap.
You need to get out more chops. There are millions of acres along the East coast of Australia with a summer dominant metre plus rainfall that is perfect for dairying. Southern parts or WA with a dry summer, they depend on irrigation to get through the summer. Not so further north. Wake up mate.
And that razor blade picture was an absolute disgrace.
Agree.But:
There were plenty of dairy farms in this area a few years back. Very few had or needed irrigation. The only problem was they could not compete with the southern and western irrigation farms. Most have gone over to beef and crops. If you don't want irrigated pastures then be prepared to pay a lot more for milk and milk products. I believe we need more dams with regulated flow and some movement of water east to west and from North Qld. (When I say that locally I get as much flack as I do when I suggest it is time to start Whaling again.)