Cash transactions, by definition, are pretty much always in-person. Thus, the risk of fraud or "significantly not as described" goods are significantly reduced. On the contrary, the modern world depends on being able to transact remotely.
Even then, there is still recourse if you pay for something with cash and the thing you buy ends up being non-functional (e.g. small claims court). And since the transaction was in person it's less likely you have no idea who the seller is.
Even then, there is still recourse if you pay for something with cash and the thing you buy ends up being non-functional (e.g. small claims court). And since the transaction was in person it's less likely you have no idea who the seller is.