Nostr isn’t decentralized because some users use wallet of satoshi 
Discussion
Is Nostr somehow affiliated with wallets? Nostr is a protocol with zaps⚡ function using Lightning Network. Many 'centralized' apps for easy using LN is not decrease decentralization of LN itself. It's only risk for users to someday find 0 on their balances, the question of trust and responsibility.
If many people holds Bitcoin on CEXs or custodial wallets, does it mean Bitcoin becomes less decentralized? It's more risks for the owners, not for the network. Correct me if I'm wrong.