This is a protocol that rolls up ETH transactions and executes them in batch, in an attempt to alleviate scalability concerns. I can't really speak to the side/unintended effects of transaction rollups on a blockchain, but I'm interested in learning.
This excerpt from the FAQ
> It is worth noting that anyone can become a relayer so long as they have staked the required bond in the smart contract. This incentivises the relayer not to tamper with or withhold a rollup.
kind of bothers me. It does not seem like such a small step to go from 'decentralized' to 'cartel of relayers' to 'central bank and subordinate branches'. And the fact that this protocol is unavailable to US persons is interesting, though perhaps standard for the space right now.
The censorability of rollup relayers bothers me too. As you mentioned, the fact that US persons are blocked from the protocol shows this is a real problem.
I think this is a problem with technological solutions (perhaps anonymous and redundant relayers, or private rollup transactions so that the relayer does not know the content of transactions in a block but can produce a valid output state) that will be worked on in the next couple years now that the base technology (rollups) exists.
