Well in some parts of the world, the feral cats may not be the problem for birds such as in Australia and New Zealand.
When you say cats, what type of cats are you talking about? Are we talking about? The ones that humans domesticated over 9,000 years ago. In advanced societies, not the bush, there are means to do it. Even the article by the OP says the Country has a plan to by 2040 or so to use spay and neuter, and restricting people to only 3 cats (idiotic humans who buy cats, then dump them and not have them spayed and neutered as a major part of the problem).
I would be willing to bet most of the idiots wanting to have kids under 14 to run around and kill cats are the parents or grandparents who contributed to the problem.
LOL! You just contradicted yourself in every stupid statement you posted trying to argue against the killing of feral cats in Australia........LOL!
Time to go, no sense arguing with idiots.....Sheesh!