[kranner]

> You just need to be somewhat good at what you do.

This is a vague statement that makes your premise unfalsifiable. If someone is not hired because of ageism, it is always possible to say they weren't good enough at their jobs, because good enough is never defined.

[weberc2]

It goes both ways. If someone is not hired because they aren’t good enough, it’s always possible to say it was ageism.

[kranner]

That’s true, but not enough to refute that ageism exists.