How could they be liable though? This is a black swan, there were no risk models predicting this, Robinhood probably didn't have a policy for market manipulatio

How could they be liable though? This is a black swan, there were no risk models predicting this, Robinhood probably didn't have a policy for market manipulation done in a decentralised and diffuse way, probably because it was never done. It's really hard to objectively defend Robinhood, it's not their job to be the gatekeeper for millions of small fish trading some peanuts. It's quite patronising.