He took advantage of a mistake made by an automated system from the bank, there was no human going "gee the guy with no income wants another $1000 to add to his massive overdraft, sure why not".
I can see how a guy could just overdraw his account and wait for the bank to tell him to pay some of it back. Maybe he thougt that when the bank will request some money back he can always sell cars or celebriy memorabilia and make the ends meet.
He didn't cocieve a plan to buy a helicopter or luxury yaht. He was just living little bit above his means for a while.
Fraud is a bit strong name when you are just doing someting noone forbid you to do.
"I went to strip clubs and spent hundreds of thousands of dollars on girls, alcohol, cocaine and whatever else."
that's not the actions of someone who just overdrew his account a bit, or is a bit bad with money.
If this guy had actually said to the bank "hey I want to borrow $2 million, I have no income and no collatoral" do you think they would have accepted the loan?