What about a Nostr client with a custodial wallet that displays your sats in USD? It would still be zapping normal Lightning, it wouldn't be Taro or stablesats, it just would display it like that. (Although i guess they might be like "why did my money reduce 40%?") It might look kinda dumb because $.000015 or something but they could just think it's dollars and crypto-adverse folks would just think they are sending micropayments. Somehow there would have to be a way to 'cashout' though. And that's where the issue is, fiat sucks. Maybe through cashapp or strike.