Earlier quoted context omitted.
“It’s impossible for me to beat the market consistently” does not imply “nobody can beat the market consistently” or “nobody can beat the market consistently for a long enough time to become filthy rich”.
The N=1 or handful of people that are your exception kind of prove the rule. Here's the thing...if you want to be pedantic, you need to explain how someone persists such alpha over time with examples. Not easy. edit: See my note below on RenTech.
Someone like Warren Buffet has a once in a generation skill combined with massive scale and information advantage (he sees deals in publicly-traded stocks before anyone else). You may claim that it’s not fair to cite Buffet here, but he’s just the most public example of market actors with a durable advantage.