Holy crap that's a lot and the fees $1 wtf i mean i get it he might be some fee  expert or has consulted someone but sending $400 million and $1 as fees , i think this is a clear example that btc is original and some shit like bch can't replace it , this proves his whitepaper was real.
There is surely one problem if he wants to convert to cash it can take him months or even years , there is high demand but keeping yourself anonymous is going to be super hard.