Exactly. They ask for age in their application and not gender or race.
Additionally, I can think of countless examples of "slow starters" that didn't really get good at something until there was something that caught that person's interest.
At best, this is a flawed metric with many nuances to consider. So many that you could probably make the same determination by removing age from the application.*
* If you want to collect demographic data, you can just ask for it in the submission form but not show it in reviews.
Sorry to break it to you, but factoring that into your decision is the very definition of [age] discrimination.
Without age discrimination
>>accomplishments are in light of how much time they've had to achieve them
Age discrimination by definition