We're working on multiple integrations that will allow users to withdraw to Fiat (similar to how our Strike integration works today) and we're also working on rolling out support to add "Vida Credit" funds to your account with dirty fiat (Apple+Google pay.) This will come with the unfortunate side affect of having to hold funds sourced from credit as well as other things, but it will open the product up to a much wider audience and still flow into Bitcoin eventually after holds, etc.
Ultimately we want this experience to show exactly why Bitcoin is better, and we hope each creator on our platform will ask their audiences to load up their accounts with Bitcoin to reap the benefits of instant settlement.