The news regarding a public reasoning of why BTC could went up $15000 is just glorifies BTC and his words doesn't sound very technical as well. No valuable info is found but it's true that BTC got a lot for attention lately
The thing is we will not get to $20,000 on this peak. That is for sure. The price is going to crash soon. I don't know when, but it will definitely be before $20,000... lol. And after the crash, it might take years for the price to recover even back to $5,000+. So I would not be so fast to say that in 2 years we will be at $20,000. I would say in 5 years we will be there most certainly though.