This is the first I heard of the Birnbaum mention. As the offical guide, that would be a pretty huge mistake for Birnbaum and would cause it a lot of trouble with Disney if it were not true. This is beginning to be like
DVC's "Disney's Best Kept Secret" advertisements -- it keeps showing up everywhere, everyone already knows the "secret," and all you are waiting for is the personal sales pitch telling you how much it will cost.