https://www.zerohedge.com/crypto/chinas-digital-yuan-comes-expiration-date
Interesting article on Chinese digital money, long with much chart porn. You can set it to expire to drive purchasing. Much like Silvio Gesells Freigeld. You can also reference the Freigeld experiment in Austria.
The interesting thing here is you can turn on and off the function for expiring money, probably the amount too. For example things are slowing down and you mark 500 to be spent this month.
So how will it be abused in the future? It's digital and trackable. You can conditionally dictate how the money will be spent. Not for loans to pay down debt. Only for electronics this month at companies who happen to be big political donors. Then, where does the expired money go that is not spent, to the electronics company? I see massive abuse of this function in the future should it come to pass. Corruption is a feature, not a bug.