This has a clear benign use. Of course it sucks that you can also use it in a hostile manner - but the fact that this tool is publicly available rather than hidden in the pocket of some unscrupulous blackhat means that every space that uses verification with these methods can now incorporate this type of testing. That's a net benefit for society.

I do think disclaimers like this are a little juvenile (it reeks of a US-ian litigation mentality), but you can easily imagine why they put it there. Perhaps instead of the author being less naive, you need to be more empathetic.