The banned dude has been posting about this decline:

https://busy.org/@anonymint/re-anonymint-most-important-bitcoin-chart-ever-20181115t203603758z

He rebuked Craig Wright:

https://medium.com/@shelby_78386/craig-isnt-smart-enough-to-have-been-satoshi-and-he-knows-damn-well-that-satoshi-wasn-t-a-person-6d2f1b543576