I'm curious what relevance Section 230 has here. That is, would Robinhood (and Reddit) be concerned that allowing users to execute a market manipulation attempt expose the platform to legal trouble, or are they protected by Section 230 (up to the point where the SEC asks them to do something specifically)?
This feels like another example of, "Their house, their rules." You don't have to use Robinhood to trade on the NYSE, so the question becomes, "Couldn't these users execute these trades elsewhere?"