"In a paper titled “Trading Is Hazardous to Your Wealth,” they showed that, on average, the most active traders had the poorest results, while the investors who traded the least earned the highest returns. In another paper, titled “Boys Will Be Boys,” they showed that men acted on their useless ideas significantly more often than women, and that as a result women achieved better investment results than men."
and concludes:
"It is important to remember that this is a statement about averages: some individuals did much better, others did much worse. However, it is clear that for the large majority of individual investors, taking a shower and doing nothing would have been a better policy than implementing the ideas that came to their minds."
Kahneman, Daniel (2011-11-03). Thinking, Fast and Slow (p. 214). Penguin Books Ltd. Kindle Edition.
The average actively trading investor will inevitably lose money vs the underlying benchmark index(es) that represent their portfolio.
That's not true. You can use as much good data as you want for trading. As long as it doesn't come from the officers of a company (directly or laundered) before that data is announced publicly.