If I tell someone to kill someone else and they do, then I should be held responsible.

If I write instructions in a book that I give to someone telling them to kill someone else and they do, then I should be held responsible.

If I give someone a tool I made that I bill as more-than-PhD-level intelligence and it tells someone to kill someone else and they do, then I should be held responsible.

All of the above situations seem equivalent to me; I'm not the only person responsible in each case, but I gave them instructions and they followed them.