My social intuitions tell me it is generally a bad idea to say words like 'kill' (as opposed to, say, 'overwrite', 'fatally reorganize', or 'dismantle for spare part(icle)s') in describing scenarios like that, as they resemble some people's misguided intuitions about anthropomorphic skynet dystopias. On Less Wrong it matters less, but if one was trying to convince an e.g. non-singularitarian transhumanist that singularitarian ideas were important, then subtle language cues like that could have big effects on your apparent theoretical leaning and the outcome of the conversation. (This is more of a general heuristic than a critique of your comment, Roko.)