This comment has a lot of merit. The expected value from day-trading or short-term investing by retail investors is likely negative. (I learned this during undergrad doing day trading for a few months and nearly losing my tuition. stupid).

The reality is unless you have an algo trading system or are a long-term investor you are going to lose on day trading in the long run. RH has done a great job of making trading easier for the masses; I'm not sure the net outcome is a good one.