Or, better say, who was responsible for it?
None other than Craig S Wright admitted in his video interview to CNBC Africa, that it was him who crashed the crypto markets by selling a sufficient enough amount of bitcoin, because he needed the money to pay for the electricity bills needed to support his side of hashwar waged by him against the rival fork of bitcoincash aka BCH: BCHABC vs. BCHSV (his being the latter).
You can watch that fragment on youtube: