I disagree.
If you go to a good university and take a science related degree or economics, you will have to apply yourself and work extremely hard to get good results. It will teach you work ethics and analytical skills. You also have deadlines to adhere to. There's plenty of people who fail at this since they lack both discipline and smarts.
Now, I'm not saying it will teach you to trade or that you need a degree to become a trader, but a higher education definitely hold some sort of value.
I don't think most people take the art of learning trading as seriously as elite students do their academical studies. Many students work 10+ hours per day as much as 7 days per week in their final periods.
I wonder what results a would-be trader could achive if he did that for say three years? The equivalent of a bachelors degree. Or say five years for a masters degree. Or 8+ years for a PhD degree.
I'm sure most don't.