A literal reading of this "cannot be run as non-root at all" interpretation would be: no commands ever should be in /usr/sbin, as a regular user might want to s

A literal reading of this "cannot be run as non-root at all" interpretation would be: no commands ever should be in /usr/sbin, as a regular user might want to see their --help, and this doesn't require root privileges. Sarcasm of course.