Most of the Cloud Royals are very weak companies, not making any profits, going up speculatively. They were not going on fundamentals like AAPL or GOOGL or FB (actual revenue and profit). Higher speculation results higher the damage. I did not buy any cloud during bottom as they are not fundamentally strong.
Reg WB, you should notice his cash balance 110B+ which he will put during the down bottom as his invested companies are safe like your AAPL. WB is normally strong during recessionary phase as BRK is one of the top low P/Es above 100B range.