Can you explain to me (and perhaps people like me) exactly what the problem with that is? Goods are being exchanged, so it is fine - but I don't have a huge background in financial systems. I would appreciate a different point of view on that.

"In a barter exchange one good is traded directly for another. This form of exchange requires a double coincidence of wants, meaning that each trader has what the other trader wants and wants what the other has. Without a double coincidence of wants the exchange process can become exceedingly complex, requiring a great deal of resources to complete transactions, resources that cannot be used for production. In fact, inefficient barter trading is the primary reason that money was invented." - good explanation from AmosWeb

That's almost like saying asset swaps and mortgage backed securities and all non-cash financial transactions are returns to a barter system.

...but they love Red flags?