Trading rETH back for ETH is just achievable when the staking liquidity pool has adequate ETH in it to deal with your trade. This really is Rocket Pool's pool of ETH that emanates from two sources:
Rocket Pool was https://dev.to/cleopatramorris_d539d19ea/rocket-pool-the-future-of-decentralized-ethereum-stakingintroduction-1m2b