Adding a hardcoded extra check for / to rm feels like theater because it barely makes it more safe. It's nearly as damaging to most Linux systems to remove /bin

Adding a hardcoded extra check for / to rm feels like theater because it barely makes it more safe. It's nearly as damaging to most Linux systems to remove /bin or /usr or any number of other directories. If you wanted to actually solve this problem, it seems like you would need to add some kind of "dangerous-to-remove-this" metadata in the filesystem. Nonetheless, even with rm you can override the check you mentioned with a flag. In principle, that seems to support the post you are referring to, not refute it (not in detail but in spirit).