SN would adopt it fwiw. Any browser client should too though.
Discussion
Is SN a nostr app?
SN allows crossposting. We have a PR that be merged soon that crossposts most post types via nostr:npub1s9etjgzjglwlaxdhsveq0qksxyh6xpdpn8ajh69ruetrug957r3qpklxzl
More will follow, but we are reliant on extensions exclusively right now which aren't available everywhere and can be painful to use in some cases.
Make SN nostr app interoperable with the other nostr communities apps for winning
There are already nostr-login, nostr-ignition and some other lib cooked by fiatjaf to simplify adoption for apps, should be pretty straightforward from now on.