Got my response from Vlad at Kagi, and the best way to chime in about bitcoin as payment is here: https://kagifeedback.org/d/493-enable-anonymous-payments-ala-bitcoinmonero/62

nostr:npub1l2vyh47mk2p0qlsku7hg0vn29faehy9hy34ygaclpn66ukqp3afqutajft has already started to make some good points there... 🫂