I don't understand this attitude.
Given HSR's large capital cost, it also seems pretty obvious for the government to move prudently. For one thing, I doubt that the provincial or federal governments have much in the way of bureaucratic expertise in HSR (which is why, I'd expect, that they appointed a Special Advisor in the first place). So, it seems pretty reasonable to seek outside and hopefully independent counsel. Second, we don't really have the financing models in place for a transit/transport project like HSR in Ontario. Third, no matter how you slice it, this is a project that will be decades long in the making. We know that the govt needs to conduct an Environmental Assessment. While this is going on, would it not make sense for the government to create an advisory body to oversee all the other aspects of the project?