But still, I think that there are legitimate factors for why Robinhood stopped taking buy orders for those stocks, like ensuring liquidity through clearinghouse deposits while trades are underway.
If one is not the customer, then they are the product!
Any valid argument that would cause another clearing house to not be able to afford to handle these orders would seemingly-equally apply to Robinhood's own clearing house; no matter who owns it, the clearing house can't afford to go broke.
If someone is arguing that Robinhood should have the risk tolerance and reserves of a larger financial institution in order to service high volatility trades.... then maybe that person should use a larger financial institution to place these high volatility trades.