Robinhood deserves negative attention, but not for restricting trades to closing-ony. That appears to not have been much of a choice.
They do deserve a lot of negative attention for running a brokerage in a way that invited a lot of risk-ignorant retail traders to instantly trade into leveraged positions for which they should never have been qualified in the first place. Robinhood has the valuation it does because it brought leveraged day trading to the masses. As someone who worked at a brokerage and designed trading tools, leveraged day trading isn't for the masses.
They do deserve a lot of negative attention for running a brokerage in a way that invited a lot of risk-ignorant retail traders to instantly trade into leveraged positions for which they should never have been qualified in the first place. Robinhood has the valuation it does because it brought leveraged day trading to the masses. As someone who worked at a brokerage and designed trading tools, leveraged day trading isn't for the masses.