I think some organizations, groups or individuals are more about having all the right traits and buzzword experience on the CV and are more afraid of being disillusioned about anything that is part of that kind of goal than interested in really solving problems or learning skills to actually do so.

lame, but legally sound. The typical back handed rejection is "overexperienced". It at least tried to make the candidate feel better.

Indeed, we can intensify or we can reduce fault lines. Labeling old or young folks with worst stereotypes will not solve problems apart from giving jollies to some on social media.

So far for me working with young people has been lot of fun and learning on both sides.

I would imagine it's extremely hard to prove though. The prospective employer could just maintain that the applicant "wouldn't be a good culture fit" or similar.

Where is this quote from ?

in the USA this is not legal AFAIK