I like how he hedged his statement not once but twice. I wonder how many people who read that statement missed both?
At this point, I don't think Wizards can make much of any other statement really. WotC painted themselves, and Vintage/Legacy, into a corner more than twenty years ago with the Reserved List (yes, that horse). If WotC had any intention at all in growing the formats, then they would've killed the RL or printed more replacement cards that subvert the list.
What can be done though? Unless you have a changing of the guard willing to crack the RL or reprint substitutes (such as true tri-lands to bump dual lands for example), these formats will forever be the unwanted child.