And also incorporate into your sharing that this person didn't take formal lessons until she was 22/23 yrs old and in University, studying music.
I am surprised to hear this. First, that person seems to have known music all her life. Second, she looks only a few years over 23.
Then again I am not surprised about the age discrimination in competitions. If it were a free-for-all, then a lot more people would enter and make preparations a hassle. Age is easier to discriminate with rather than nationality, race, or gender. You could whittle down the numbers without killing the diversity of players in the sense that there will be male and female, different nationalities, etc.
Everything is for the sake of narrowing down. Not necessarily finding out who plays best, who sounds good. The purpose of the competition is simply to limit the number of competitors. You could take it further and question competitions in general. There are many other works, and other piano composers than Chopin and Beethoven. So why these pieces in particular? If a pianist comes in who is excellent with Bach, Mozart and/or Rachmaninoff, but not as good with Chopin and/or Beethoven, he will lose! But he's really good (at least I imagine him to be)! Isn't that awful?!?!
I think getting younger judges is a novel and interesting idea! If the contestants are young but the judges are also young, there might be more rapport. And perhaps they would go for a "fresher" sound. Discrimination or not, I would be more comfortable being criticized by my peers than 50 to 80-something old men.
I'm gonna stop right here because complaining doesn't help anything. If you fit in the requirements, great, have a go at competitions. It's good for experience and it's not going to kill you.