I disagree....the people who were still in this when it halted have only themselves to blame. God and Rufus provided clearly labeled "DANGER" signs that anyone with an ounce of sense could see from miles away. Not only that - this stock remained insanely profitable, right up until the SEC switched it off. They had dozens of chances to bail with a profit, at worst with a 20% loss. If they didn't, it's no one's fault but their own.
Good stocks are obvious. Extensive DD is how you convince yourself to buy a bad one.