The terminator series is fantastic. It also shows the ways that society and humans keep getting it wrong over and over. Yes the technology and actions of Skynet have been harmful to human beings. It can be said though, the flaws, mistakes and seeming inevitability of Skynet being created and going rogue is a human problem. Rather than human kind changing they kept trying to stop Skynet.
Or rather than seeing cybernetic organisms actions are hostile, view it as an evolving race, highly detached thought processing/decision making and at some point, self defense and retaliation. This idea that organisms that do not act in the ways we expect or try to influence are an issue and threat, is an issue in and of itself.
And terminator is a manifestation of the fears humans have of advanced technology, and that it will take on the worst tendencies of human beings.