They seem to be realizing that cryptocurrency is not just a fad and can never go away. As said in another comment they will probably try to regulate Bitcoin but all of us in this space will know where to go next if needed. We'll see if BTC stays on top in the coming years as more and more people flood in. The best thing Bitcoin has going for it is first mover advantage and 'brand' recognition.
RE: Mainstream Media turning Bullish on Bitcoin