That's not even remotely true.
The Quantum Fund by Soros and others, returned upwards of 30% per year for over three decades.
Steve Cohen averaged near 30% annual returns for two decades.
Buffett's investing track record is similarly off the charts.
And lastly, a monkey couldn't do what John Paulson (or Burry and Eisman) did with the 'greatest trade ever,' producing a radical outcome from an extremely intricate concentrated investment (some of which required them goading the opportunity into existence to begin with).
If you had said monkeys with darts can sometimes outperform the bottom half of traders on Wall Street, you might have been close.