In my experience as a college student, it is exceedingly rare to use cash, especially cash in amounts greater than $5, for anything other than crime. While you can argue that one should be able to reasonably break laws and not get caught - anything else is a surveillance state and there is value to discretionary enforcement - I wouldn't characterize criticism of cash as just manipulative.

For example, on my campus, the vast majority of all cash transactions, from what I've experienced, are to buy illegal drugs or to illegally obtain alcohol. The rest of the transactions are with dining services and with clubs. Because dining services has to keep so much cash on hand, they are a major target for crime; they need to hire more expensive managers to count it, they need to have more cameras and security staff to monitor it, and they need to hire armored guards to carry it off to the bank. In the past front line employees have been shot in armed robberies, so yes, the many safety mechanisms are necessary.

What incentive does anyone in this story have to keep using physical cash? It is crazy insecure, dangerous, inconvenient, and used often for illegal things. The criminals (who are more than you'd think; who do you know who hasn't broken at law at least once or twice?) have an incentive to keep cash around. That is legitimate, but as a society, a better approach would be to rewrite our laws to better capture the realities of human behavior and serve the community interest. When people are routinely getting away with things (drinking, smoking, etc.) it is probably time to make them legal and grant those people the full protections of the law and the monetary system - including non-physical value.