Yeah but as a counterpoint, most Hacker News users have used Linux at one point, which lets you run commands like `rm -rf /` as root. I think it's fair to allow power users to easily disable these protections.
Ironically, coreutils introduced[1] a requirement to add `--no-preserve-root` to `rm -rf /` way back in 2003, so that particular example doesn't really support the counterpoint you're trying to make.
Most consumers don't care about security, making it easy to disable just opens the floodgates of their systems.