>>538213364
You know I ask myself this same question everyday, trying to make sense of it.
The only conclusion I came up with was the Konami never expected Dracotail to be this well received. They probably thought Yummy would be that designated "fun" deck because its cute and all.
But playstyle wise Dracotail has them all beat in terms of fun. So if Konami were any smart about it they'd kill all the decks that are in the way of Dracotail becoming the best deck, at least for a format.