The problem isn’t that there is a fiat step, the problem is that only one side of the transaction is in crypto. Expedia aren’t “accepting crypto” - they’re send

The problem isn’t that there is a fiat step, the problem is that only one side of the transaction is in crypto. Expedia aren’t “accepting crypto” - they’re sending you to someone who will swap your crypto for cash and then taking the cash. The fact that refunds are in dollars means there is no fundamental difference with just swapping the crypto yourself before booking