I think the headline is a little misleading. The author concludes:
"So don’t despair at the valley of despair. Instead, see it as an opportunity to flush out all the speculation (and the speculators themselves) and return the field back to the people who are actually going to be building the future rather than just trying to make a quick buck. Those fleeing investors will be back when we need them."
I agree. The market caps on most of these cryptos were completely out of control before the most recent crash. They are probably still valued too high. This is a good opportunity to learn about the technology and invest in solid projects at good entry points.