That article is established last month and as we can see, it didn't happened if China didn't established a policy about ICO which is one of the reason why we saw a slight correction this past days. So without China's movement recently, we able to breach $5,000 for a continous bull run.
And price drop is possible as always but not that much. Goodluck for that Goldman Sachs analyst in waiting for $2,221 price drop. That is a failed speculation.
How come he speculate that the drop will came to 2,221$? Is he really a expert speculator? or just random guy who made a wild guess? The price of bitcoins have come again to 4600$+ and the upward movement will be continue since the dump of bitcoins has been done and people used to moveon on china banning of ICO alts.