A member of the military might not have any problem at all with the "accidental" assassination of their leader, whether that leader is the president or the company sergeant. AI could easily provide plausible deniability.
I've been very critical of claims of the dangers of AI, but this isn't about AI - this is about giving lethal weapons to autonomous systems.
And that's just stupid. All software has bugs, and even if you don't have a problem with autonomous killing systems - I certainly do - it's incredibly irresponsible to build systems that could kill just because someone left out a semicolon or couldn't convert between miles and km.
It's taking the "blue screen of death" experience just a little too literally.