> But the Eth folk managed to get proof-of-stake to work at scale; good on ’em. That’s a bit charitable IMO. It works with at least two major caveats:

1. You can’t unstake staked ETH. (This seems to have all manner of strange effects.). Fixing this is apparently a big deal, and, if nothing else, could enable attacks in which one unstakes and then uses knowledge of old staked private keys to attack other parties.

2. It hasn’t actually been that long, and the major validators likely have a strong interest in making Ethereum work well. Just working at scale does not mean it’s secure at scale.