Doing anything with expect is basically only coding for the happy path. It's fine for some throw away script but as soon as you need any kind of reliability it's useless.
I would agree that using a pure CLI (Unix Shell) requires significant operator skill to not accidentally blow things up. But that is also why you write scripts, test them, etc.
Sitting at a root shell executing untested or uncertain things is pretty high on the list of don't do these things.
