Unfortunately for him and fortunately for crypto enthusiasts, crypto market price is not determined by opinion by an individual. Come to think of it, since my involvement in crypto I have neither read about him or come across his paper or something that could account for being a reputable individual that could speak and be listen to in crypto.
Yes, he may be famous in his own field but when it comes to cryptocurrency, it's a whole lot different thing. Even if they would say that they have all the theories that can support their claims, bitcoin always does something surprising even to us crypto enthusiasts which makes them not able to comprehend it further and just giving some predictions hoping to come true so that it will not tarnished their reputation.
In other words, its just one of the prophets of doom predicting about the moment and I noticed he was being careful about not putting a timeline to it as that would quickly shame his predictions.
There are many of them out there who are trying to predict the price of bitcoin. He is careful as to not put a timeline in his prediction because he knows that when that time comes and his prediction didn't materialize then his credibility would be lowered and it would be bad for him.