Yea, just like this Al Capone character. Way to over the top and crazy. No one like him would ever exist.
From my understanding, stupid but ruthless sociopaths exist in the gangster world.
I get that he behaves ridiculously, but history is absolutely full of people who behave in such a manner.
The thing that annoys me about him is that he doesn't really have much depth. But I don't really find him cartoonish or really unbelievable.