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That there are bankers who have done a considerable amount of damage is also indisputable but does not detract from the value add which banks provide. Have a read of Bernstein's The Birth of Plenty or Ferguson's The Ascent of Money for clear explanations of how important the banking system is to the economy.
As to the individual bankers, I know/have known many both personally and professionally. A few became friends. Many I would consider hard working, smart and have no reason to suspect were anything less than honest. However, the prospect of never again having to deal with a number of others provided considerable motivation to retire early.
And let's not forget that compared to the average politician, bankers are pillars of moral rectitude.
I have sympathy if he is tied into a rental contract (12 plus 2 etc) but if not then he must have had a decent enough pay off to continue to afford the rent.Normal people would have downsized long before.
I’d give myself 6 months max to get a job before reassessing my outgoings.