All are predictions, possible. There is no definite information that we must double. In my opinion, 2018 is not a good time to double, it is a good time to invest.
In my estimation, your opinion is highly valid. Wish I had sMerit to bestow on your comment. While the noobs are crying blue murder, the old hands are accumulating the coins at every dip. This is because they are long term at this bearish moment. Those who believe 2018 should bring them easy fortune through cryptocurrency following what happened in 2017 should just bury that thought and face reality on ground. To that, I don't trust any report projecting what price will be in the future for any crypto.