Saying hooks is "seven years old" is just being pedantic. I worked on a major project in 2019 where making the decision to use hooks was a huge leap of faith. It did not become the default way of writing React code until 2020/2021, so five years is more than accurate enough.

- Dan Abramov's first big conference talk was in October 2018

- The official release was in React 16.8, February 2019 - that's six years ago