This wasn't "just" privacy violations or psychological manipulation with ads, this was Robinhood deciding what to do with YOUR money to cover their ass. Whether they lent it to you or not doesn't matter, because if the bad trade were going the other way, then you, the sucker, would absolutely be on the hook.
Whether it's fraud or flawed or whatever else is beyond my experience or knowledge, but after today I think ending up on the wrong side of the deal with Robinhood again will rightfully be met with suggestions that you should have known better.