The idea isn't to be anonymous per se, it is to blend in with the crowd. You join a few communities, you can easily, easily pull the Casino Royale short position/puts.
Say that production is halted, that you discovered faulty accounting, immediate recall, etc. Tesla would've plummeted.
And that's if you want to blend in with the crowd of volume and people holding puts, which, are not that expensive, especially if you push out a few weeks.
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With bitcoin, it is not anonymous. You will have a pain to cashout 100k+ of bitcoin. The address is now literally blacklisted, the coins will be forever tracked, exchanges blocked and whenever there's movement, ironically, twitter threads will appear similar, if not akin to bitmex margin calls.
Any localbitcoin dealer worth their salt, would flag it because even if it's in escrow, it is most likely that small amount would blacklist their own account, especially since most traders are cheap and will send from exchange>localbitcoin escrow.