That guy thinks Bitcoin will rise to over $ 3 million some day, and that today's fair value is over $ 38,000. 
Today's fair value is 700 instead of 38,000 (so 50x overestimated)
So he is telling one day Bitcoin can have 3,000,000 / 50 = about 75,000 value. I agree with 75,000
Why do you believe today's fair value is 700? Please don't say because that's the exchange rate because by doing so you will only make a fool out of yourself. Price and value are completely different things.