The proposal is interesting; my personal opinion is that the key factor remains the specific need and the availability of liquidity. Each user has a different urgency, and most are looking for quick and functional solutions, not necessarily ideal or decentralized.

Today, companies like VISA and Mastercard are capitalizing on this demand with crypto-reloadable cards. They don't create new money; they simply offer an already established infrastructure with broad global acceptance. In my personal case, I liquidate sats for USDC and then top up a Cypher Card (VISA), which allows me to pay for goods and services frictionlessly. (Not what I wanted, but it's what I get.)

The same goes for family remittances: it's much more practical to exchange USDT for fiat on any P2P market than to look for a technical alternative that hasn't yet matured in terms of adoption or liquidity.

In short: liquidity follows the simplest and most direct path. As long as a solution like Cashu cards doesn't overcome that friction and offer the same ease of use, I don't think I, as a retailer, would pursue that alternative without any incentive.

Since I'm biased about my needs, I think I'd need to consult with more retailers about the idea.