Nothing is impossible with crypto. $100k or $1k, all of them are in the real of possibilities. Lots of people will go mad at him but he is simply telling the truth. Crypto has no price floor as it don't have price ceiling. If you can't stomach the volatility, you shouldn't own any crypto and move to more less volatile assets like real estate.
Bitcoin lost more than 85% of its peak price before, it can definitely happen again. That's no big news.