I don't know what really happened to him, but if I look at the whole, I think you are right, there is a feeling of disappointment or something he knows less about bitcoin.
Read the post history of that guy, he doesn't really have any research to say. He's a former bitcoin bear but eventually changed his heart into a bitcoin bull.
Well, that's the positive side that I can see. A guy who mocks bitcoin before now turned into a bullish guy.