This is quite so funny to be listening to man named Jamie Dimon pretending to be an expert with something he does not fully understand. Just because he is a well-known and talkative CEO does not give him the front row knowledge on Bitcoin and in extension he does not know Satoshi Nakamoto and his whereabouts, in the first place. He is just essentially spreading non-sense as usual and the media is taking his words for the sake of eyeballs or traffic. For all we know, Jamie Dimon actually some hoard of Bitcoin somewhere because he is greedy too...and maybe he is planning to buy more at a lower price that is why the FUD.
I would say what he's saying is all crap. Don't believe what he is saying, feeling important in this market. But just the same with other users, don't know what's gonna happen next. We are all just speculating and so it depends on how are you gonna act to take advantage of this opportunity. Better follow your instincts rather than listen to someone who feels he is the expert on this matter.