That's quite true. I try not to fall under the spell of the selectivity bias.
I know a bunch of math grad students who competed in the IMO and the Putnam, and I know another (smaller) bunch of math grad students who despize math competitions. It's a matter of personality, I guess. Some are problem solvers, other are theory builders. We need both.
All in all, the point was that math competitions, per se, attract math "whiz kids". Hence, AoPS should be populated by, at least some, math "whiz kids".
I know a bunch of math grad students who competed in the IMO and the Putnam, and I know another (smaller) bunch of math grad students who despize math competitions. It's a matter of personality, I guess. Some are problem solvers, other are theory builders. We need both.
All in all, the point was that math competitions, per se, attract math "whiz kids". Hence, AoPS should be populated by, at least some, math "whiz kids".