What in that article makes you think a generation is shorter?

* Turing: September 2018

* Ampere: May 2020

* Hopper: March 2022

* Lovelace (designed to work with Hopper): October 2022

* Blackwell: November 2024

* Next: December 2025 or later

With a single exception for Lovelace (arguably not a generation), there are multiple years between generations.