>a legitimate trading platform with fully built out functionality designed for people trading with that kind of volume Note that many people have no reason to

>a legitimate trading platform with fully built out functionality designed for people trading with that kind of volume Note that many people have no reason to believe that Robinhood does not match this description (even I only assume it doesn't, but that's only based on perception, not anything remotely objective - I can't trade in quantities above 3 or 4 digits, so I don't feel the need to invest my time in learning the differences between Robinhood and more "legitimate" platforms). Like you say, they do have a responsibility to learn such things, once they are trading in such volume, but Robinhood also creates zero barrier to entry, and knowing what you don't know is a real skill, and with those two facts, we do have to be thoughtful about precisely where we lay blame.