The possibility exists that 1 billion in bitcoin could black-swan dive into Monero tomorrow. It doesn't matter, however, it's bullish for Monero regardless.
This obscene public spectacle with hunderds of people on r/bitcoin pouring over the forensic details of this transaction is a giant advertisement to anyone with two neurons that bitcoin is non-viable as a store of value and currency. This individual is one KYC leak away from the entire world knowing their net worth and identity. I hope they trust every single employee at Bitfinex, Binance, and Bitmex. Their life may depend on it. 1 billion in crypto is nation state level threat model.