I don't know why the government has resisted the idea, but as a former chief statistician, I find the principles to be extremely valuable. For example, Bill C-36 talks about the chief statistician doing his or her job. It makes it very clear, and the language in that is what I would say is a one-sentence summary of the principles. That's one reason.
I'm not quite sure what extra value you would get by adding those principles. It really is right there, in my view.