I couldn't care less what anyone thinks but a fundamental of the case is the belief in a just world. What are we, Cooper researchers, trying to resolve here?
When justice is not forthcoming from a higher authority, people will and do take justice into their own hands. Acts of vengeance are the result. Cooper's actions at the very primitive reflect that. The motives and the goals of Cooper are the same of us, the pursuit of justice. It's just that Coopers perception of justice differs from us, it has no limits, and that is important. Cooper carries a bomb. He faces jail time. He jumps into the dark into wind blast. Those risk taking are self-destructive. With such a cost for risk, vengeance must be shared. Cooper is often seen as a Robin Hood figure and it's because the banks have robbed Cooper, Cooper robs the banks back, in fact he cycles that behaviour, when getting money offering the crew some money, giving money.
In the original notes, Cooper demands the money, then he will let the passengers go, then he wants the chutes. This isn't the way it goes down (thought overcomes feeling) but originally, Cooper doesn't mind the passengers to witness the money and before anyone argues that the passengers see it as just a bag, Cooper sees it as a bag of money.