I'm not familiar with the source, but even if it's a legit source, it's only a prediction, nothing is special here.
I like this kind of prediction as it only prove people are optimistic with the future, and even if the price is low at the moment, they are still here believing this market will eventually change into a bullish one.
Virtually everyone is an holdler of BTC and we are very optimistic about it price increase but in doing so, we don’t have to start playing with figures without fact and not being realistic about our decision, it would not have raised an issue if he didn’t say 2020 which is just by the corner here, in another 9 1/2 months now, we will be welcoming yourself into the new year, what major fundamentals will come to force this year that will make it jump so high from $20k to $50 we are targeting to 1 million dollars.
This type of silly prediction may end up even destroying the market rather than make it because any Lame man will see the system as a joke.