I don't hate them, and prior to this week I'd have considered using them for simple equity trading. But they're clearly in over their heads, and simple risk management should lead people to find a safer venue.
It's true that many other brokers from bit players to top-tier firms occasionally have trouble during intense market days. I've worked in finance on and off for decades, for brokerages, hedge funds, and market makers. I've written systems that process real-time market data and trade directly on exchanges. I'm well aware of the challenges in trade processing systems, and Robinhood simply hasn't built enough testing, redundancy, or scalability into their systems, as we're now seeing.
It also happened on leap day, and there's speculation that their systems were simply unable to handle that. Robinhood denies it, but they also had problems on leap day 2016.
There's no reason that a company like Robinhood can't succeed, and someone in that space will succeed. It may very well end up being Robinhood. But are you willing to bet your own money on that right now?