Kangaroo meat producers need to do a better job marketing their product.

Kangaroo meat is high in protein and low in fat (about 2%). Kangaroo meat has a very high concentration of conjugated linoleic acid (CLA) when compared with other foods. CLA has been attributed with a wide range of health benefits including anti-carcinogenic and anti-diabetes properties, in addition to reducing obesity and atherosclerosis.

Wild kangaroos require no extra land or water for farming, produce little methane, live natural free-range lives, eat organic food, and are killed humanely.

It's also delicious. But for some reason it isn't anywhere near as popular as less healthy and environmentally friendly choices like beef and lamb. Maybe the kangaroo people should get Sam Kekovitch to do an ad for them.

Kangaroos were here a damn long time before cattle and farmers and fences.
Leave `em alone.
At least they naturally control their population. Unlike Homo Sapiens.

oh dear, Kangaroos can be shot by shooters and by farmers with a permit.

The number are estimated each year and around 7-10% are allocated for culling. What the author doesn't mention is the distribution of Kangaroos. In fact for a lot of marginal land the farmer would be better off farming the Kangaroos.
I think the author has been speaking to a few too many scorched earth farmers that will or want to kill just about any native animal that enters their land. Eagles, kangaroos, wallabies, wombats, even parrots.

If a farmer believes they have too many kangaroos on their land then they have evidence based methods of dealing with it. They can get a shooter in or they can seek a permit themselves. The fact that some other countries have different laws can be helpful why restrict to the countries nominated.

a Permit is good as you would hope there is a level of training that comes with it. Most people are hopeless at identifying the correct target species.
As a farmer what we don't need is more city cowboys coming out and shooting the place to bits.

Kangaroos are not pests. The human animal uses the term to justify what it wants. Kangaroos live with the planet , they can even control their reproductive cycle to suit conditions.
So who are the pests? I think humans.
The kangaroos might the right to life as well.

The rains come and there is a boom in the kangaroo population. Then comes the dry and they die in their thousands. Boom and bust.

There is no good reason why any properly licensed person shouldn't be allowed to take advantage and hunt for meat for the table. The same applies to rabbits, ducks, pigs and deer.

Where it is available, it is criminal to allow so much first class protein to be left to rot.

80% plus of Queensland is presently suffering drought. Here, from earlier in the season,

http://www.abc.net.au/news/2015-03-31/kangaroos-starving-to-death-in-queensland-drought/6360746

Of course roos should be taken for meat and for leather products too.

When a NSW farmer gets a permit to cull 'roos on his property then the carcasses must be tagged and left to rot, not even to be used for dog food.
Likewise road killed ones, it is an offence to cut a steak off the 'roo that just caused $1,000 damage to the car, it too must be left to rot.