You are right, but I’m not sure if the intelligence was built into the command to recognize it as a root level deletion.

rm -rf --no-preserve-root /

Looks like it started appearing in various flavors of Unix and Linux around 2005.

If it were on an old installation of linux, it would delete everything on the file system, from every disk attached.

Modern Linux systems require an additional flag to explicitly stay that you want to nuke your system.

I like Jitsi, but when I record a session it always silently aborts after about 40 minutes.