My nit is that we don't actually have evidence supporting the idea that it stops at or around 25. As far as I know, the brain continues to have observable changes throughout your life.

(The person I replied to didn't make this claim directly, but it's an oft-cited myth that it seemed like they were referencing.)

> As far as I know, the brain continues to have observable changes throughout your life.

That would imply that people might retain the ability to form memories past the age of 25, though.