That was approximately my reaction. Considering how easy it is to influence humans, it would be a nontrivial task to avoid unintentionally changing those values. I suspect that a significantly subhuman AI could change human values. One might argue that by increasing and redistributing wealth and improving medical care, our expert systems today are changing human value unintentionally. Google ads, which are automated and "learn" what the user likes, are specifically tailored to influence us, and do a remarkable job considering the relative simplicity of the algorithms used.