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.