How can you be 100% sure that it will push the price of Bitcoin?

I really don't think that this will greatly impact the market. I even don't know that guy was. Sure he is the leader, is he buying with his own money? or money from the government? And he has a official twitter account? 

Another garbage article to begin with. No substance at all, every media outlet is really riding the waves with bitcoin's popularity, but quickly condemns and sensationalize everything negative about it. Double Standard.