nostr mainly focuses on bitcoin because everything else is too scammy and not really decentralized. Most of these projects like code and solana are run by small teams designed to make a profit off of bitcoin’s success and are not serious long term solutions. Noone is going to have multiple different wallets with different coins when transacting online. bitcoin is the only serious project attempting to build a global currency and money. Damus is bitcoin only for this purpose and will always be.