The video was produced by cracked.com, an American site.
Australia simply does not have the rebellious history of revolution to ingrain the concept of firearm ownership as an "inalienable right" - heck, *any* self defense tool is illegal in Australia - you literally cannot even own pepper spray any more. Might get used against the police. The country was formed from numerous penal colonies - since the late 1700s, the systems of government have been basically authoritarian in nature - it's becoming the ultimate nanny state. Think about it - a natural progression of government from penal oversight governors backed by British military that evolved into state governments that eventually federated - they have their roots in authoritarianism. That power culture just doesn't dissipate.
In NSW a law has just been passed that will force bicycle riders to carry their drivers license or other state-issued ID on them while riding a bicycle, so that police can positively identify you in the event you get pulled over while riding a bicycle for traffic infringements. You literally need to carry government ID while riding a bike. Sadly the "she'll be right" attitude of the Australian populace just means it happens relatively unopposed.
Kill an intruder in your home? Murder, no question. Case in NSW just this week - young father with young family, repeat offender breaks into the home at 3:30am, fight ensues, citizens arrest attempted, burglar stops breathing after police arrive, dies, the home owner is arrested, charged with murder and held with no bail. The burglar had *just* been released after successfully overturning his conviction on similar charges just weeks before because of improper admission of CCTV footage of him committing crimes as evidence.
But yeah, Australians aren't shy of sharing "holier than thou" opinions, especially when it comes to the US, or parts of Asia.
If you haven't worked it out I'm an Australian living in the US. My kids are a mix of "local and imported" ingredients