I'm not exactly sure if he had nearly 4 million in crypto based capital laying around in order to actually act on this exploit.
They way I'm reading it is he could start with "a large amount of eth/tokens" this might be 1 Eth or 100 Eth.
Then he does his magic and withdraws his original amount 223 times.
The only bottleneck is the 7 day wait period and how confident you are that you wont get caught during that period.
Day 1
Deposit 1 Eth
Day 7
Withdraw 223 Eth
Deposit 223 Eth (Absolute baller move to use your stolen eth to steal more eth from the same company!)
Day 14
Withdraw 49729 Eth
Buy Pagani Huayra
Day 15
Convince IRS agents that a stranger randomly gifted you $203M worth of Eth