On a different note, it makes no sense also from a very simple security point of view. I'm no expert but I feel like I need to make 100% sure every time I make a BTC transaction since I'm exposing the private keys to sign the tx (yet they perform million of txs).
I don't get why they pay withdrawals from
an addy holding Bitcoin worth 1.1 billion dollars. They even make several transactions
per block nowadays. I'm curious how they sign the transactions offline, how many employees have access, and how they prevent huge mistakes from happening.
I can only think of one reason to dump all funds on one pile: it's a very large coinjoin pool, and makes it very easy to hide your transaction history from the outside world.