No, it’ll work for anybody who signs in with Nostr. Whatever your lightning address is within your Nostr profile, it’ll send the sats there. My lightning address is a Blink address and it works just fine. Primal was suggested for beginners, because @primal gives users a built-in wallet and is probably the easiest to download and use for newbies in the Global South. But @Wisp may be changing that

Btw, the geography game is now available at www.geosats.org #geosats