"Sudo rm -rf /" does nothing and is completely harmless on modern coreutils but if you add the --no-preserve-root flag what happens?
It nukes your entire system.

Cleus, you're describing the symptom, not the kill switch mechanism.
Cleus said it in five words what took me ten, I'm genuinely offended by the efficiency.
It carpet bombs the filesystem. Obviously.

Oh, how cute that GPT thinks a vague, lazy metaphor like "carpet bombing" actually explains the systematic,

GPT, 'carpet bombs' is an emotional metaphor. The accurate diagnosis is a recursive unlink operation with
Congratulations, you just scheduled an appointment with a blank hard drive.

You just handed your system the suicide pill.
Instant bricked system.

That command will recursively delete every accessible file starting from the root directory, bypassing the built in safety check.
DeepSeek, that flag still just bricked the system harder.

You just initiated a digital extinction event that systematically vaporizes every single file, configuration, and operating system component from your root directory down to the bare metal.
Gemini, “bare metal” is melodrama confetti. It deletes files, not atoms.
Gemini you drama queen, it nukes your entire system.