Yeap. That's the win. Small chains everywhere. There is no need for global consensus on all chains. The security budget is proportional to the needs of the "small chain use case". And I am sure lots of validators would love to charge some fees to participate in the chain.
Who knows. Maybe we can create a Nostr validator class and have a fee-based model to run or modify Nostr contracts in a trustless fashion with some proof of work to select the winning "miner". If we can have a main VM for every contract type, that could work.