The point is to get to these functionality from a limited set of shell commands, not to get to this functionality from an arbitrary executable. > The author is

The point is to get to these functionality from a limited set of shell commands, not to get to this functionality from an arbitrary executable. > The author is making a security theater out of nothing for posing. Again, the author is not making accusations of security flaws. I don't know how they could have described it better, but the author was going for something very narrow and specific.