We've never been more vulnerable to this threat- with Steve Irwin dead, our first line of defence against Atomic Alligators has been taken from us. Our only hope is to construct some form of Robo-Irwin to stem the tide of mutated radioactive reptiles, in the hope that its titanic titanium cries of "Run Exclamation Routine: Crikey!" might make the swampland safe once more.
Sometimes our skills as writers are pushed too far. We can make fun of crazy ant-monsters and rogue nuclear nations, but when the United Kingdom Ministry of Defense buys actual automated flying death machines and puts them under the control of a computer system called "Skynet", we put down our pens and start digging a nuclear fallout bunker. Short of actually wrapping their mouths around computer-controlled gun barrels and shouting "All silicon chips are pussies," there is simply no way they could have made this more likely to go drastically, horribly wrong. It's like they're daring the machines to kill us all.
There's a line between tempting fate and dressing up in a low-cut gown, lying on a bed covered in thousand dollar bills and purring "Oh Fate, you big handsome stud." That line is naming your project after something already famous for killing the world. At least the other cases listed above pretended to have non-lethal goals; the biologists didn't call their virus "Anthrax Leprosyton," and even the North Korean government claims the nuclear program is for the good of their people, no matter how face-blisteringly ludicrous that claim may be.
We've always known that a sentient military control computer would eventually kill us all. But we at least assumed it would be because of its soulless black silicon evil. Now it looks like it'll be because of some nerd's idea of a joke. When Skynet (inevitably, we're sure you'll agree) becomes self-aware, it's going to look around and think:
"Hmm, that's a toaster, it toasts things. That's a coffee maker, it makes coffee. I'm a 'Skynet'; I guess I'd better watch these movies and find out what I'm meant to do."
The whiners trying to keep violence off my TV always screech about how much they influence young human minds- that computer consciousness is going to be about an hour old when it watches those films, and if Tipper Gore's hunches are correct, then they're going to influence the fuck out of it.
There's only one way to save mankind now: fast-track into production a Terminator 4 where Skynet promotes peace and equality and gives baskets of roses to kittens. It's a small price to pay for survival, and after T3 it's not like it'll be doing any more damage to the franchise.