I was more of taking issue with your wording, it came across more as "it's canon because SM says so, because SM decides what's canon" and less "it's canon because SM says so, because SM is FOX's mouthpiece".
Especially since he kinda isn't FOX's mouthpiece, and others here can (and have, including Corporal Hicks, and even myself) relay what they've gleaned from FOX, too. But I imagine "it's canon because Corporal Hicks says so" doesn't have the same ring to it?