They claim it is from JL Warren Capital, but amazingly there is no clear source/link.
So ignoring that this is an unreferenced claim - let's just pretend that they actually said that. A quick search of "JL Warren Capital" and "Tesla" shows that for the past half decade they've either been getting their Tesla estimates way too low or way too high:
"JL Warren Capital" "tesla" - Google Search
What makes you think that they're accurate now? And more to the point, what makes you so confident of their accuracy so as to assume that Tesla is dispatching ship after ship to China of cars that mysteriously nobody seems to want, in a country of 1,4 billion people where 8% of all new car sales are electric? Or rather, perhaps they're not dispatching ships full of cars - maybe they're empty, and Tesla is paying to send empty ships across the Pacific as part of a potemkin village! Hmm, but then the Shorty Air Force filming as they load cars at Pier 80 must be part of the conspiracy. Oh, I know, they're stopping partway and dumping them all on the bottom of the ocean, right?
Seriously, what's your actual theory? Don't play coy - tell us.
Also, please let us know who it is that's been booking the test drive waiting lists full days in advance in China and who's been staging all of the paid actors at the Tesla stores.