It's possible for it to achieve since we still have 4 years to achieve it. And there was a prediction I just saw that within one week bitcoin could go back to 15000 usd. Let's just wait for it to go up again. I'm currently hodling my btc.
Honestly I just found this prediction non-sense. They are just stating this one to be on the spot light, riding the sentiment of bullish crypto enthusiast.
Please let him be right

In 2014 he predicted $10,000 in 2017, he was right.
He isn't 100% right, Bitcoin goes up more than $10k. He would be more reliable if he predict that ATH of BTC in 2017. Anyone can say something that Bitcoin will be in X value in this Y time.
What are his basis?? This is purely prediction.
there is none and its just a mere speculation.