Yep, but that could still cause issues (those entries could be used as signals, or be mount points for currently unmounted partitions, etc). rmdir anything that start with "/" should be an absolute no-go.

To say nothing about running a sequence of shell commands without the -e option.

In this case, the rm -rf before that does. The rmdir is the Windows command in this example and with /s /q, it will quietly delete everything.