RPIP-57 guarantees that anyone can distribute ETH in Node Distributors (where execution layer rewards for people not in the smoothing pool go).
The pDAO asks the development team to include RPIP-57 in the next major smart contract release.
Currently, anyone can call distribution on a Node Distributor. It attempts to send the node operator’s share to their withdrawal address and if that fails the entire distribution including sending of rETH share fails. For example, a node operator could set their withdrawal address to a smart contract that doesn’t accept ETH or only accepts it when they are personally initiating the distribution. A profit motive for node operators to do this exists when rETH is traded at a discount. Ensuring that everyone can distribute would help support the rETH peg through better arbitrage and better match expectation that anyone can distribute.