This article is not claiming the price will drop to $5,000. Arguing against that maybe comes from a mindset of following too many chart readers. I do not project or predict prices but only analyze technology and the fundamentals behind them. Please try not to glam on to a number as a target from this article.
If one goes to a mindset of fundamental value investing rather than a daily trading one you'll see that there is little difference from a risk/reward standpoint between buying at $6,500 or $5,000 if the technology is indeed valuable to the point that it gets to say $50,000 in some months or few years.