Re: "If it appeared on screen, it's canon." THIS is canon?!?
OK, I watched it. Scotty appeared to be in Enterprise D's engineering section, for some reason.
I'd say that this isn't canon, despite being "on screen", since it is a commercial and not from a series episode or movie.
Don't try to be a great man, just be a man, and let history make its own judgments.
-Dr. Zefram Cochrane, 2073