Why does it having the ability to do something has mean it is ‘unusable’ in a professional setting?

Is it generating CP when given benign prompts? Or is it misinterpreting normal prompts and generating CP?

There are a LOT of tools that we use at work that could be used to do horrible things. A knife in a kitchen could be used to kill someone. The camera on our laptop could be used to take pictures of CP. You can write death threats with your Gmail account.

We don’t say knives are unusable in a professional setting because they have the capability to be used in crime. Why does AI having the ability to do something bad mean we can’t use it at all in a professional setting?